Answer:
B. it gives off no radiation
Explanation:
Dark matter is so named because it neither absorbs nor emits light and therefore cannot be directly observed.
Answer:
B
Explanation:
it gives off no radiation
Arctic ice retreat is threatening many species in this ecosystem. Their resources are being cut and they are needing to find new ways to survive. Do you think in your lifetime you will see drastic effects to the species in this ecosystem and why? Will that affect other ecosystems?
Answer:
no
Explanation:because they will find new ways to survive in the environment
Answer:
We are already seeing drastic effects to the ecosystem and it's wide assortment of species. Animals such as polar bears, and seals are losing their breeding and hunting grounds. Polar bears in particular are losing their ways to catch seals for food and interbreeding with grizzly bears. Fish and whales from warmer parts of the world are starting to move up north and are becoming invasive. Most importantly, since cold water from the melting ice are mixing with ocean currents, global climates and weather systems are changing course. Ultimately, in about 500 years, there could be a large Global Climatic Shift that may put us into another Ice Age.
The_________controls the movement of materials into and out of the cell.
a.) cell membrane
b.) nucleus
c.) cytoplasm
d.) mitochondrion
Answer:
cell membrane
Explanation:
Answer:
cell membrane
Explanation:
In what ways did Charles Lyell impact Charles Darwin’s theory of evolution? What type of relationship did Darwin have with Charles Lyell? How did Darwin learn about Charles Lyell's ideas?
Answer:
They both believed that continuous and gradual change is law of nature
Explanation:
Charles Lyell's “Principles of Geology “ encouraged Charles Darwin to think of evolution of living organisms as a slow process just like the slow geological processes taking place since millions of years. As per Charles, the slow and little contribution of continuous geological events shaped the present geological attributes of the earth. Likewise Charles Darwin’s theory of evolution also earmarked accumulated effects of small gradual changes over immense spans of time. They both believed that continuous and gradual change is law of nature.
Draw a cladogram that best represents the possible evolutionary relationship between species A, B, and C
And three animals that could match this phylogenetic tree.
Answer:
Monotremes, marsupials, and placentals are the three animals that could match this phylogenetic tree.
Explanation:
Monotremes, marsupials, and placentals belong from a common ancestor. Those organisms which have one common ancestor are also called monophyletic. These animals have some changes which occurs with the passage of time but most of characters are similar to each other. In placentals animals placenta is present while in Monotremes and marsupials this placenta is absent.
Science has had no negative impacts on society.
Please select the best answer from the choices provided
OT
OF
Answer:
false
Explanation:
Answer:
the answer is false
Explanation:
please help i really need this done a lot of points for a reliable answer please
Answer:
True
Explanation:
You are evaluating the effect of different types of fertilizers on plant growth. You plant 12 tomato plants and divide them into three groups, where each group contains four plants. To the first group, you do not add fertilizer and the plants are watered with plain water. The second and third groups are watered with two different brands of fertilizer. After three weeks, you measure the growth of each plant in centimeters and calculate the average growth for each type of fertilizer. Identify the independent variable, dependent variable, control group, and experimental group from this experiment?
Answer:
Control group - the plant group which has not received the fertilizers treatment.
Experimental group- the groups treated with different varieties of fertilizers.
Independent variable- amount of water and fertilizers
Dependent variable- growth of plants
Explanation:
A scientific experiment is performed in a way that the experimental samples are classified into the control and experimental groups. Also, the experiment involves various variables to be studied which can be classified as an independent variable and dependent variable.
In the given question, the experimental samples are:
1. Control group- The samples which are not provided with the variable being studied like the experiment is performed to test the effect of fertilizers and "the plant group which has not received the fertilizers treatment" can be considered the control group.
2. Experimental group- the samples in which the variable to be studied are provided with that is "the groups treated with different varieties of fertilizers."
In the given question, the variables are:
1. Independent variable- the variable which can be changed or modified or can change on their own like "amount of water and fertilizers" in the experiment.
2. Dependent variable- the variable which is being tested, can be measured and is dependent on an independent variable like the " growth of plants" in the experiment.
The picture below shows a simple model of the rock cycle. Use the picture to answer any questions that follow.Which events at point 6 could transform sedimentary rock into igneous rock?
Extreme winds and storms weather the sedimentary rock into particles, which collect in rivers and are compacted into igneous rock.
Rising oceans erode mountains of sedimentary rock into particles, which sink and get compacted into layers that form igneous rock.
Tectonic plates drive sedimentary rock under Earth's surface, where it melts into magma and turns into igneous rock as it cools.
Shifting tectonic plates push the sedimentary rock toward the poles, where it freezes and hardens into igneous rock.
Answer:
Tectonic plates drive sedimentary rock under Earth's surface, where it melts into magma and turns into igneous rock as it cools.
Explanation:
Why does the northern hemisphere experience Spring in March, while the Southern Hemisphere experiences fall?
Explanation:
because the tilt of the earth on its axis
Answer:
The Sun is directly overhead in the Northern Hemisphere in March The Southern Hemisphere receives more direct rays from the Sun in March. The Northern and Southern Hemispheres get the same amount of energy from the Sun in March.
Explanation:
i hope this makes sense and helps out a little bit :))
please help lot of points i need helppppp
Plz help with my work I really stuck on this
Who's more likely to survive a bullet wound; a body builder or an obese person?
Answer:
an obese person is likely to survive a bullet wound, because of the thick skin/ layer they have. People have survived gun-shots in the past because of their size...
I need an answer for this ASAP. it’s number 6 7 8. 52 points to first person
Answer:
6. So high air pressure over a sea area corresponds to low sea level and conversely low air pressure (a depression) results in higher sea levels.
7. Thunderstorms, Tornadoes, Hurricanes, Winter storms
8. weather is short-term changes in the atmosphere and climate what the weather is like over a long period of time in a specific area.
Hope this is helpful!
science help pls, thank you
Answer:
1A. Agriculture
2. C.Industrial
5. B
6. A
7. D.Cities
Explanation:
It is known as dead zone because of the little or absence of oxygen in the water body. It doesn’t support life. Sources of Pollution in water bodies are mainly by Agricultural acitivities. Other sources include industrial wastes, municipal uses etc.
Why are massive main-sequence stars not
likely to have planets that contain life?
1. The life zones around these stars are too
small.
2. These stars would sweep away all of the
material from which planets could form.
3. These stars are on the main sequence for
too short a time to alllow life to evolve
4. These stars are too hot to allow water to
exist as a liquid on any planets that might
form.
5. These stars are almost always binaries
and planetary orbits are unstable around bi-
naries.
Answer:
5
Explanation:
Which of the following conclusions is suggested by the map
The ring canal, stone canal, radial canals, and madreporite are all parts of the
system
O a. Nervous
O b. Water Vascular
O c. Circulatory
d. Digestive
Limiting Factors that are Density Dependent are affected by the size of the population
True or False
Answer:
this would be true
Explanation: these factors increase whi is what you asked right
Austin is conducting an experiment to determine which dog food his dog likes the best. He gives his dog three different kinds of dog food, each type for two weeks at a time. Austin gives his dog the same amount of food every day. He then records how much of the food his dog eats. What is the independent variable in Austin's experiment?
type of dog food
amount of dog food
type of dog eating dog food
length of time for each dog food
Answer:
It would be the type of dog food.
Explanation:
nervous/endocrine questions help pls!!
Answer:
Explanation:
1. A
2. B
3. IDK.
The landing of pollen on the stigma is followed by the growth of the pollen
tube towards the ovule. The pollen tube growth is guided by chemicals released from the pistil of the female flower. What is this type of growth in
the direction of chemicals called?
• positive chemotropism
• negative phototropism
• positive phototropism
Answer:
positive chempotesiem
Explanation:
Why is this statement not a hypothesis?
Sunflowers require soil and plenty of sunlight and water to grow and thrive.
Answer:
It’s stating exactly what is going to happen with no guess and it’s not in an if,then format
Difference between homology and heterology?
Hello! I got the answer! So if you look at the word homo and hetero. Homo means the same and hetero means different. So homology is the study of to show the simliarity between organisms. And heterology is the study of to show difference between organisms. This is my first time answering! Anyways have a good day/night!!
I need helppp on thisss !!!
Answer:
H
Explanation:
Mendel used more than 28,000 pea plants in his experiments. Why is it
important that he studied such a large sample of pea plants?
A. Having more samples gave him results that were closer to the
predicted ratios.
B. The pea plants were very inexpensive.
C. Using more plants made the experiments take less time.
D. Most pea plants die after producing seeds.
Factors that limit the growth, abundance, or distribution of an organism or a population are known as
Abiotic factors
Limiting factors
Biotic factors
Environmental factors
Predict the likely effect on the ability of substance L to enter the cells if substance L is attached to a large protein instead of free in the
culture.
Answer:
Since the cell membrane is semi-permeable, the likelihood of substance L entering the cell attached to a large protein is lower than that of substance L free in the culture. Substance L enters the cell membrane through active transport, but the cell membrane may block the larger protein, thus blocking substance L, if it is attached to the large protein.
Explanation:
What is a subunit vaccine made from?
Answer:
Subunit vaccines are composed of a part of the virus particle responsible for inducing protective immunity. A subunit vaccine produced by recombinant DNA techniques would provide an efficient and inexpensive alternative method for the control of this commercially important disease.
True or False: Too much carbon in seawater prevents clams, snails, and other
sea animals from growing their shells.
Answer:
true
Explanation:
the carbon isn't what they need it's oxygen
Select the correct answer.
A pond shows the presence of algal bloom in it. For night-time, what is the interpretation with respect to the amount of oxygen and nitrates dissolved in that water?
CA Amount of dissolved oxygen will be lesser than the average, and amount of nitrates will be high due to the presence of a large number of algae in it.
B. Amount of dissolved oxygen will be higher than the average, and amount of nitrates will be less due to the presence of a large number of algae in it.
C Amount of both, oxygen and nitrates, will be higher than the average due to the presence of a large number of algae in it.
Answer:
B
Explanation:
Amount of dissolved oxygen will be higher than the average and amount of nitrates will be less due to presence of algae in it
Answer:
B
Explanation:
