Answer: After an environmental disturbance such as a volcanic eruption or forest fire, communities are able to replace lost species through the process of succession. Primary succession occurs after a volcanic eruption or earthquake; it involves the breakdown of rocks by lichens to create new, nutrient -rich soils.
Explanation:
After an earthquake or volcanic eruption, lichens break down the rocks to produce new, nutrient-rich soils. This procedure is called as primary succession.
What is primary succession?When a new piece of land is produced or is first exposed, primary succession occurs.
This may occur, for example, when lava solidifies and forms new rocks or when a glacier changes and bring out bare rocks. In the initial succession, organisms have to start over.
Mosses or lichens are frequently the first creatures to emerge in areas of primary succession.
Because they are the first species to appear, these organisms are known as pioneer species; pioneer species need to be resilient and powerful, just as early settlers.
Therefore, an ecosystem can reestablish in an area after a disturbance such as a volcano.
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What are the enormous moving pieces of the earth’s lithosphere called?
all living things try to maintain a stable internal environment know as ____ ( fill in the blnk)
All living things try to maintain a stable internal environment known as homeostasis.
What is Homeostasis?Homeostasis may be defined as a process through which living organisms maintain a stable internal environment in order to survive and function appropriately. This activity is useful in the regulation of overall balance among all the body systems.
This process of homeostasis illustrates some physical as well as chemical parameters through which living organisms maintain and permit the actual and balanced functions of their numerous components like cells, tissues, organs, organ systems, and the whole organism.
Homeostasis also maintains the heart rate, blood flow, blood pressure, internal temperature, amount of nutrients, level of oxygen in the cells, etc. All the internal activities and state of balance are furnished to living organisms via the major activity of homeostasis.
Therefore, all living things try to maintain a stable internal environment known as homeostasis.
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Which biome has high humidity and high temperatures?
A. Desert
B. Rainforest
C. Temperate forest
D. Tundra
Answer:
Rainforest
Explanation:
I have had this question before
Which of the following statements is NOT part of the cell theory?
a - New cells come only from existing cells.
b - The cell is the basic unit of structure and function in an organism.
c - All cells are identical
d - All living things are made up of one or more cells.
Answer:
new cells come only from existing
how many offspring plants from a cross between r (round peas) and rr (wrinkled peas) genotypes would need to be examined to be confident at the 1% level that the r plant is actually rr?
Since we cannot have a fraction of a plant, we would need to examine at least 7 offspring plants to achieve this level of confidence.
To determine the number of offspring plants that need to be examined to be confident at the 1% level that the r plant is actually rr, we can use a statistical test called a chi-square test. This test compares the observed data with the expected data based on the assumption of a specific genetic ratio.
In this case, we are crossing plants with genotypes r (round) and rr (wrinkled). The expected genetic ratio for this cross is 1:1 if the r plant is actually rr. We want to be confident at the 1% level, which means that there is only a 1% chance of observing a deviation from the expected ratio due to random chance.
To determine the sample size needed, we can perform a chi-square test with a significance level of 0.01 (1%). The chi-square test will provide a critical value that indicates the maximum allowable deviation from the expected ratio.
The formula to calculate the critical chi-square value is:
χ²_critical = χ²_(α, df)
where α is the significance level (0.01) and df is the degrees of freedom, which is equal to the number of categories minus 1.
In this case, there are 2 categories (r and rr), so df = 2 - 1 = 1.
Using a chi-square table or a statistical software, we can find that the critical chi-square value at α = 0.01 with 1 degree of freedom is approximately 6.635.
Once we have the critical chi-square value, we can use it to calculate the required sample size using the formula:
n = (χ²_critical * (p1 * p2)) / ((p1 - p2)²)
where p1 and p2 are the expected proportions for each category. In this case, since we expect a 1:1 ratio, p1 = p2 = 0.5.
Plugging in the values, we have:
n = (6.635 * (0.5 * 0.5)) / ((0.5 - 0.5)²) = (6.635 * 0.25) / (0.25) = 6.635
Therefore, the number of offspring plants that need to be examined to be confident at the 1% level that the r plant is actually rr is approximately 6.635. Since we cannot have a fraction of a plant, we would need to examine at least 7 offspring plants to achieve this level of confidence.
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12 points!!!
1. What are three specific examples of organic matter?
2. What kind of organic matter could you find on a forest floor versus on a desert floor.
3. Is organic matter generally darker or lighter than soil when we are referring to color.
4. What do we use the soil texture triangle and what does it tell us, specifically?
5. Search for a picture of a 'soil texture triangle. What do the numbers on the side of the triangle mean?
6. We know soil should be 25% air in composition, how does soil compaction affect the soil and what are some ways
you can think of that we can bring air back into the soil?
7. There was a short introduction on soil profiles in this reading. After reading the introduction, what do you know
about a soil profile?
1. Dead plants, animal carcasses, compost.
2. You would find plenty of dead leaves and bones on the forest floor, while the desert floor would be very low in organic matter and would contain a higher majority of sand.
3. Organic matter is generally darker when referring to color. This is why the humus layer, or the final stage in the decomposition of organic waste, is black.
4. The soil texture triangle is used to help visualize and understand the meaning behind soil texture names. It tells us specifically what textures soils may be depending on the percentage of sand, silt, and clay in each.
5. The numbers on the side of the triangle relate to the percentage of clay, silt, and sand in the soil.
6. Soil compaction can prevent water drainage, slow microorganism population growth, and suffocate and stunt plants. Air can be brought back to the soil by using an aeration tool, or by introducing burrowing animals and plants with heavy roots. Aeration tools reduce compaction in soil, while rooted plants and burrowing animals create pores that allow air and water to drain into it.
7. (I can't 100% answer this question because it is apart of the reading that I don't have access to but I'll give it a shot) A soil profile is the arrangement of soil horizons that make up the various layers in the soil. We observe and describe soil horizons and soil profiles to help classify and interpret the type and uses of soils.
Which will form an ionic bond?
a. Any two neutral atoms
b. Two oppositely-charged ions
c. Two oxygen atoms
d. Two negative ions
Answer:
b. Two oppositely-charged ions
Explanation:
opposites attract when talking about ions
Carla is using a fertilizer that contains nitric acid. How is nitric acid classified?
O strong acid
O weak acid
O strong base
O weak base
Answer:
strong acid
Explanation:
i just got it right on edu 2020
O
/ l \
l
_ / \_
Carla is using a fertilizer that contains nitric acid, which is classified as strong acid. The correct option is A.
What is a strong acid?Strong acids dissociate completely or nearly completely in water, whereas weak acids dissociate only partially when dissolved in water.
An acid or base that conducts electricity strongly contains a large number of ions and is referred to as a strong acid or base, whereas an acid or base that conducts electricity only weakly contains only a few ions and is referred to as a weak acid or base.
When dissolved in water, an equilibrium between the concentrations of the weak acid and its constituent ions is established. The following are some common examples of weak acids.
Hydrochloric acid, nitric acid, sulfuric acid, hydrobromic acid, hydroiodic acid, perchloric acid, and chloric acid are examples of strong acids.
Thus, the correct option is A.
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In mRNA, which DNA base is replaced with uracil? *
A) C
B) А
C) T
D) None
E) G
Answer:
The answer is T
Explanation:
In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine
Its in the picture plz helppp
Answer:
Explanation:
Diploid cells
this is an example of a . it contains sugar and an base. group of answer choices lipid; deoxyribose; adenine nucleotide; deoxyribose; adenine nucleotide; ribose; adenine nucleotide; ribose; guanine
The example of a nucleotide is shown below. It contains a pentose sugar and a nitrogenous base. Ribose and adenine nucleotide are among the response options.
The nucleotide is the first of the building blocks that make up DNA and RNA. A nitrogenous base, a five-carbon sugar molecule, and a phosphate group are the three main components of a nucleotide. The nitrogenous base, which comes in four different types (adenine, guanine, cytosine, and thymine), is linked to the sugar molecule (either ribose or deoxyribose).
The nucleotide's phosphate group is connected to the sugar's 5' carbon atom. The following is an example of a nucleotide: image from here.DNA and RNA nucleotides differ in their chemical makeup as well as the nitrogenous bases they include.
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Which is one function of a protein macromolecules?
A. Making the leaves of plants waterproof
B. Providing the building instructions for living things
C. Cushioning the internal organs of an animal
D. Making up the connective tissue in tendons
Answer:
B. Providing the building instructions for living things
Explanation:
The function of protein macromolecules is that they provide the building instructions for living organims.
Protein macromolecules are essential for the growth and repair of damaged tissues in the body. Each unit is made of covalently bonded amino acids. They are derived from protein based meals such as a diary products, beans, etc. Most of the works in the cells requires proteins.Proteins are also polypetides.
What is formed into the extreme heat and turmoil of a supernova?
Answer:
heavier elements are formed
Explanation:
Remember, when a series of processes (fusion of elements) occurs in a star, it would result in a huge explosion that leads to the death of the star, forming what is called a supernova.
The supernova then forms heavier elements that are released into space as a result of the extreme heat and turmoil.
What do these base pairs code for?
Multicellular organisms must be protected from the external environment. Because of this, cells of even the simplest multicellular organisms are arranged to form an external barrier
A) cellular tissue
B) epitheral tissue
C) connective tissue
D) interstitial tissue
please help
Answer:
B) eptiheral tissue
Explanation:
this is because they line many things in the body such as the organs and of course cells.
The vast arrynof different finch breaks on the galapgos island is an example of adpative
The vast array of different finch beaks on the Galapagos Islands is an example of adaptive evolution.
The beak morphology of the finches on the Galapagos Islands is highly diverse and has adapted to different ecological niches and food sources available on each island.
This variation in beak size, shape, and strength is a result of natural selection acting on the finch populations over time. The availability of different types of food and the specific environmental conditions on each island have driven the selection of specific beak traits that are advantageous for survival and reproduction.
For example, finches with larger, stronger beaks may be better equipped to crack open hard seeds, while finches with smaller, more delicate beaks may be more efficient at capturing insects or feeding on soft fruits.
As a result, finches with beak traits that are well-suited to their respective environments have a higher likelihood of surviving and passing on their genes to the next generation. Over time, this adaptive evolution has led to the emergence of different finch species with distinct beak morphologies on the Galapagos Islands.
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which of the following is a protist that causes an std? group of answer choices gardnerella vaginosis candida albicans chlamydia trachomatis neisseria gonorrhoeae trichomonas vaginalis
Trichomonas vaginalis is a protist that causes an STD. Trichomonas vaginalis is a motile, single-celled, parasitic organism that causes trichomoniasis, an STD in females. In males, it can cause urethritis and prostatitis. Trichomonas vaginalis is typically found in the vagina and urethra of infected individuals.
It spreads via sexual contact and can be asymptomatic. Symptoms include vaginal discharge, burning, itching, and painful urination. Trichomonas vaginalis is usually treated with antiprotozoal medications such as metronidazole. Sexual partners of infected individuals should be treated as well to prevent reinfection. Trichomonas vaginalis is a sexually transmitted disease (STD) caused by a parasitic protist called Trichomonas vaginalis.
It's passed through sexual contact and is one of the most common sexually transmitted infections. Trichomonas vaginalis infection may be asymptomatic in up to 50% of people. Women may experience a frothy, greenish-yellow, fishy-smelling vaginal discharge and vulvar itching or burning. Men may experience urethral discharge or burning during urination. The presence of Trichomonas vaginalis may increase the risk of acquiring other sexually transmitted infections (STIs) or HIV.
There is no immunity against trichomoniasis, and infection does not provide protection against future infections. Hence, it is essential to use protective measures like condoms during intercourse.
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Please help look in pic :)
Answer:
Explanation:
There are several types of ribonucleic acid, or RNA, but most RNA falls into one of three categories.
mRNA or Messenger RNA
mRNA transcribes the genetic code from DNA into a form that can be read and used to make proteins. mRNA carries genetic information from the nucleus to the cytoplasm of a cell.
rRNA or Ribosomal RNA
rRNA is located in the cytoplasm of a cell, where ribosomes are found. rRNA directs the translation of mRNA into proteins.
tRNA or Transfer RNA
Like rRNA, tRNA is located in the cellular cytoplasm and is involved in protein synthesis. Transfer RNA brings or transfers amino acids to the ribosome that corresponds to each three-nucleotide codon of rRNA. The amino acids then can be joined together and processed to make polypeptides and proteins.
the three parts of the cell theroy
Here are the 3 parts of the cell theory:
1. Cells are the basic building blocks of any living things.
2. Any living thing is composed of more than 2 cells.
3. New cella arise from the old
Answer:
1) All living organisms are composed of one or more cells.
2) The cell is the basic unit of structure and function in living organisms.
3) All cells come from preexisting cells.
Explanation:
These are the three most important statements to know. These are also the three parts of the cell theory.
Hope this helps!
Describe the scientific method. What are some biases in science?...
Describe the scientific method. What are some biases in science? How can we use it to address sustainability (give example of applying science)? What sustainability issues do you think are important to you personally (in environmental science)?
The scientific method is a systematic approach used by scientists to investigate phenomena, involving observation, hypothesis formulation, experimentation, data analysis, and conclusion.
Biases in science include publication bias, confirmation bias, and funding bias. The scientific method can be applied to address sustainability by conducting research on environmental issues, developing evidence-based solutions, and promoting sustainable practices. Personal sustainability issues may vary, but examples include climate change, biodiversity loss, and resource depletion.
The scientific method is a process used by scientists to understand the natural world. It begins with observation and question formulation, followed by the development of a hypothesis that can be tested through experimentation. Data is collected and analyzed, and conclusions are drawn based on the evidence obtained.
Biases in science can arise due to various factors. Publication bias occurs when studies with positive results are more likely to be published, leading to an incomplete representation of the available evidence. Confirmation bias occurs when researchers favor information that supports their preconceived beliefs or hypotheses. Funding bias can also influence research outcomes if funding sources have specific interests or agendas.
To address sustainability using the scientific method, researchers can investigate environmental issues such as climate change, deforestation, or pollution. They can collect data, analyze the impacts of human activities, and develop evidence-based solutions to promote sustainable practices. For example, scientists can study the effectiveness of renewable energy technologies to reduce greenhouse gas emissions and mitigate climate change.
Personal sustainability issues may vary depending on individual perspectives. Some important sustainability issues in environmental science include climate change and its impacts on ecosystems and communities, biodiversity loss and habitat destruction, sustainable resource management to ensure future availability, and promoting environmentally friendly practices in industries and everyday life.
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Why are clouds typically way up high in the sky?
Which of the following IS NOT a name for the cell membrane?
Cellular Envelope
Phospholipid Bilayer
Fluid Mosaic Model
Plasma Membrane
1) Glven this decision tree, node 2 represents A) the optimal solution. B) a state of nature. C) an alternative. D) a non-optimal solution. 22) Given this decision tree, what can be said about this decision? A) There are three payoffs. B) There are two alternatives and three states of nature. C) There are eight decisions to be made. D) There are three alternatives and two states of nature.\
Based on the given options, option B seems to be the most plausible answer for the second question, but a definitive answer cannot be provided without more specific information about the decision tree.
Node 2: Without knowing the specific context or content of node 2, it is not possible to determine whether it represents the optimal solution, a state of nature, an alternative, or a non-optimal solution. The interpretation of node 2 depends on the specific decision tree and the labels assigned to its nodes.
Decision Tree: The structure of a decision tree typically consists of nodes representing decisions or alternatives, and nodes representing states of nature or outcomes. Based on the given options, it is likely that the decision tree has three alternatives (noted as "three payoffs" in option A) and two states of nature (noted as "two alternatives and three states of nature" in option B). However, without more specific information about the decision tree, it is impossible to confirm the exact number of alternatives or states of nature, or the total number of decisions.
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Which statement about photosynthesis is correct? a Plants get the energy they need for photosynthesis from soil. b Plants get the energy they need for photosynthesis from sunlight. c Plants get the energy they need for photosynthesis from water. d Plants do not require energy to perform photosynthesis.
Answer:
B) plants get the energy they need for photosynthesis from sunlight
Explanation:
The true statement about photosynthesis is that "plants get the energy they need for photosynthesis from sunlight"
PHOTOSYNTHESIS:
Photosynthesis is a unique process undergone by the cells of autotrophic organisms like green plants, in order to produce their own food. Green plants make use of the light photons from the sun as their energy source. A pigment called CHLOROPHYLL, which is enclosed in the chloroplast organelle is responsible for capturing the light energy. Therefore, the true statement about photosynthesis is that "plants get the energy they need for photosynthesis from sunlight"Learn more: https://brainly.com/question/17161133?referrer=searchResults
One strategy to find the main idea is to look for repeated_______ Phrases, and ideas
A. Charts
B. Words
C. Pictures
D. Colors
Answer:
B. Words
Explanation:
I believe this is right!
Charts, colors and pictures do not make sense in the context.
I chose words because the question already includes "phrases" and "ideas," so words would logically make sense with these other 2.
Which of the following is not required for the formation of coal? a)dead organisms b)dead vegatation c) presence of oxygen d)high pressure
The presence of oxygen is not required for the process of formation of coal.
Coal forms over millions of years through coalification, mainly from the remains of deceased organisms, notably dead vegetation, undergoing transformation into a fossil fuel with high carbon content.
Through the coalification process, the organic matter undergoes high pressure and heat, resulting in the formation of coal. In fact, The presence of oxygen is not required in coalification but it is the absence of oxygen that helps in preserving and transforming the organic matter into coal.
Therefore, the presence of oxygen is not required for the coal formation.
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B. Write 'T' for true and 'F' for false.
1. Deforestation leads to desertification.
2. Cutting of trees does not affect the soil layer.
3. Endemic species can be found anywhere in the world.
4. The red data book contains list of endangered species.
5. Extinct species are those which do not exist on Earth anymore.
Answer:
1 True
2 False
3 False
4 True
5 False
what is the change in a coefficient of linkage disequilibrium equal to -0.204 expected to be if the recombination rate is 0.001 (give your answer to four decimal places)
The change in a coefficient of linkage disequilibrium
(D) equal to -0.204 expected to be if the recombination rate is 0.001 is 0.2041.
The formula for the calculation of D is:
D = pAB - pApB, where:
pAB is the frequency of a haplotype containing alleles A and B, pApB is the expected frequency of a haplotype consisting of the frequencies of A and B alleles based on their individual frequencies. The formula for calculating the expected change in D with a recombination rate of r is:
∆D = -rDIn this question,
the value of D = -0.204 and the recombination rate(r) = 0.001.
We can substitute these values into the above equation to obtain the change in D as follows:
∆D = -rD∆D = -0.001 (-0.204)∆D = 0.000204
Hence, the change in D is expected to be 0.2041 (rounded off to four decimal places).
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Two bird species, A and B live in the same habitat at the same time and are competing for the same prey. Which of the following is/are a possible outcome of competition? Select all that apply
a.) Species A and Species B begin to forage in different areas of the habitat
b.) Species B is a better at obtaining prey than Species A and drives Species A to extinction in this habitat
c.) Over time, Species A develops a beak shape adapted for a particular type of prey and Species B develops a beak shape adapted to a different type of prey
d.) Species A is better at obtaining prey than Species B and drives Species B to extinction in this habitat
The possible outcomes of competition between two bird species, A and B, for the same prey can include: a.) Species A and Species B begin to forage in different areas of the habitat.
This outcome is possible as a way for the two species to reduce direct competition by partitioning the available resources. c.) Over time, Species A develops a beak shape adapted for a particular type of prey and Species B develops a beak shape adapted to a different type of prey:
This outcome is known as resource partitioning, where each species adapts to utilize different resources or prey items, reducing competition and promoting coexistence. It's important to note that outcomes b.) and d.) (one species driving the other to extinction) are not necessarily typical outcomes of competition.
While competitive interactions can lead to changes in population sizes, it is less common for one species to completely drive the other to extinction in a habitat. Instead, species often undergo adaptive changes or partition resources to coexist.
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all of the following are ways the body can regulate fluid balance, except which one? group of answer choices by pumping sodium out of cells and potassium into cells by decreasing urine output from the kidneys by signaling the thirst mechanism by moving water in and out of cells
The body fluid regulation in the human body is maintained to ensure that there is a stable amount of fluids in the body. There are various ways of regulating body fluids in the human body, including the movement of water in and out of cells, pumping sodium out of cells and potassium into cells, signaling the thirst mechanism, etc. Therefore, decreasing urine output from the kidneys is an exception.
All of the above-mentioned methods contribute to regulating the fluid balance in the human body. The sodium-potassium pump is a fundamental process that helps in regulating the fluid balance in the body by ensuring that there is a proper balance of ions within and outside the cells. This pump ensures that there is a steady concentration of sodium and potassium ions in the cells and in the extracellular fluid and helps maintain the osmotic balance in the body.
The thirst mechanism is a physiological response that contributes to fluid regulation in the body. The thirst mechanism is triggered when the body senses that there is a decrease in the water content in the body. This mechanism causes an individual to feel thirsty, prompting them to drink more water and rehydrate their body. However, decreasing urine output from the kidneys is not a method of regulating fluid balance in the body.
On the contrary, the kidneys play a crucial role in regulating fluid balance in the body by filtering out excess fluids and waste products from the blood. Hence, "by decreasing urine output from the kidneys" is the exception among the listed options.
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