Answer: I believe it was Johann Wolfgang Dobereiner
Explanation:
what is a Primary energy source
Answer:
Primary energy consists of unconverted or original fuel
Explanation:
for example, primary energy sources include petroleum, natural gas, coal, biomass, flowing water, wind, and solar radiation
Those are the fuels that can be mined, reaped, extracted, harvested, or harnessed directly
2. Are the volume values similar to each other or are they quite different? Explain why you see what you see. If they are similar explain why. If they are different also explain why.
Answer: The density, ρ, of an object is defined as the ratio of its mass to its volume. ... Mass and volume are extensive (or extrinsic) properties of matter - they ... In this experiment, you will measure masses and volumes to determine density.
Explanation:
does anyone know the specializations of the dura mater?
RESPUESTA:La duramadre es la meninge exterior que protege al sistema nervioso central (encéfalo y médula espinal).
Es un cilindro hueco formado por una pared fibrosa y espesa, sólida y poco extensible. Se extiende hasta la 2ª o la 3ª vértebra sacra. Tanto la piamadre como la aracnoides reciben el nombre de leptomeninge.
La superficie interna es lisa y pulida y corresponde a la capa endóstica, mientras que la externa es regularmente redondeada y responde a las paredes óseas y ligamentosas del conducto vertebral, corresponde a la capa meninge [1](duramadre propiamente dicha que no continúa en el canal vertebral), de las que está separada por el espacio epidural.[2] Esta última, libre en su parte posterior, anteriormente se halla en contacto con el ligamento longitudinal posterior. En sentido lateral, se prolonga alrededor de cada nervio espinal, al que acompaña adelgazándose cada vez más por fuera del foramen intervertebral.
El extremo superior continúa sin límites netos con la duramadre craneal. Por su superficie externa, se adhiere al foramen magno y al atlas. El extremo inferior constituye el fondo de saco dural, que se detiene a nivel de S2-S3. Contiene a la cola de caballo y al filum terminale. Este último en la parte más inferior del saco dural, perfora a la duramadre, que se aplica contra él envainándolo. Desciende hasta la primera vértebra coccígea. La duramadre se adhiere a la cara anterior del conducto sacro.
A group of students investigated the effect of soaking small onion bulbs in different concentrations
of sodium chloride solution. They peeled off the outer papery leaves of the onion bulbs and divided
the onions into 6 batches, each with 10 onions.
The onions were surface dried with paper towels and weighed. The mean mass of the onions in
each batch was calculated. The onions were then left in sodium chloride solutions for three hours.
After three hours the students surface dried the onions and weighed them again. Their results are
given in Table 2.1.
Calculate the percentage change in mass of the onions that were in the most concentrated solution of sodium chloride. Show your work. Write your answer in Table 2.1.
Explain why the students calculated the percentage change in mass of the onions.
Answer:
This question is incomplete
Explanation:
This question is incomplete but the missing table of the question is attached in the document below.
To determine the percentage change in mass, the formula below is used
(mean mass after soaking - mean mass before soaking)/mean mass before soaking × 100
Thus, for the last concentration (200 g/dm³) that wasn't calculated
(175 - 183)/183 × 100 = -4.4
The reason for calculating the percentage change in mass of the onions is to know if an increase in concentration of sodium chloride leads to an increase or decrease in size of onions. And from the result, the increase in concentration of the sodium chloride solution led a decrease in size of the onion (thus the reason for the negative sign of the percentage as the concentration increases).
Calculating the percentage mass difference will help student to plot a graph. The percentage change in mass in most concentrated solution is -4.4%.
Osmosis:
It is the process by which solvent molecule move from its high concentration to its low concentration via a semipermeable membrane.
The percentage change in mass can be calculated using the formula,
[tex]\bold {M = \frac{Mf - Mi}{Mi \times 100} }[/tex]
Where,
M - mass percentage
Mf - Mi - change in mass
Mi - initial mass
For most concentrated solution,
Mass difference = 8
[tex]\bold {M =\frac{ 8}{183} \times 100}} \\\\\bold {M = -4.4}[/tex]
The percentage change in mass in most concentrated solution is -4.4%.
They calculated the percentage mass difference to show the change in mass after putting into the solution.
Therefore, the increase in the concentration of the solution, decrease the final mass of onion.
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When the viral DNA becomes active in the lysogenic cycle, which life cycle does it enter?
A.lytic
B.lysogenic
C.cell cycle
D.DNA replication
Answer:
A.lytic
Explanation:
Lysogenic and lytic cycles are two cycles of viral reproduction. In the lysogenic cycle, the viral DNA is incorporated into the host cell genome. Then, it can be passed on to the cell's daughter cells after it divides.
The other cycle of viral reproduction is called the lytic cycle. In the lytic cycle, the DNA is activated (transcribed). Viral particles can then assemble and replicate, and lyzing the host cell.
What is produced when a plant breaks down sugar to release energy.
Answer:
Carbon Dioxide and Water
Explanation:
B+121-121=180-121
Whats this
Answer:
letters should not be in math
Explanation:
✋‼
Answer:
B = 59
Explanation:
B+121-121=180-121
simplify the first part of the equation: B=180-121
subtract 121 from 180: B=59
PLEASEEEEE HELPPPPPPP
In sexual reproduction, what helps to maintain genetic variation?
a. reduction division and fertilization
b.mitosis and fertilization
c. binary fission and fertilization
d. reduction division and mitosis
Answer:
The answer is a because it will give you genetic variation
The answer is A.) reduction division and fertilization
I took the test got it correct
What is the biological impact of minimum catch sizes on a population of fish?
A)
Older, less productive adults are removed, improving the population’s health.
B)
It applies a selective pressure for larger, faster growing fish.
C)
The fish in the population produce more eggs to compensate.
D)
The fish in the population produce healthier eggs to compensate.
E)
The population comes to be dominated by smaller, slower-growing individuals.
Answer:
Hello! The correct answer choice is E.
Answer:
The population comes to be dominated by smaller, slower-growing individuals.
Explanation:
just did it
Why is astrology referred to as a pseudoscience?
Answer:
Astrology has not demonstrated its effectiveness in controlled studies and has no scientific validity, and is thus regarded as pseudoscience.
Explanation:
name two things that can be done to ensure that we use ecosystem resources in a sustainable way
Several different approaches to implementing ecosystem management exist and these involve conservation efforts at both local and landscape levels and involve:
Adaptive management.
Natural resource management.
Strategic management.
Command and control management.
hope this helped
which process used energy to combine inorganic molecules to synthesize organic molecules
Answer:
Photosynthesis
Explanation:
HELP THIS IS DUE IN 30 MINUTES :((
When fats are broken down, the fatty acids tails are split into what 2-carbon molecules in preparation for aerobic respiration? At what stage do these 2-carbon molecules enter the pathway?
Answer:
Question 1:(Amino Acids and Lipids) Question 2:(glycolysis)
Explanation:
What is the site where proteins are made in the cells ? What is the organelle
Answer:
Ribosomes
Explanation:
Sites in a cell in which protein synthesis takes place. Cells have many ribosomes, the exact number depends on how active a particular cell is in synthesizing proteins; rapidly growing cells usually have a larger number of ribosomes
expain the meaning of business opportunities
23. Which type of chemical reaction tends to occur on its own, or spontaneously?
Answer:
Exothermic reactions
Explanation:
Exothermic reactions are more spontaneous because they release energy for example "my bouncy ball is rolling down the hill".
Which structure is most necessary for a mitochondria to produce new molecules?
Answer: Nucleus!
Explanation:
The structure necessary for a mitochondria to produce new cells is the nucleus.
Hope this helped!! :D
Answer:
Hydrogen Pump
Explanation:
(Please help :( >>What states of water occur in the water cycle? (Site 2)
Answer:
Water can occur in three states: solid (ice), liquid, or gas (vapor). Solid water —ice is frozen water. When water freezes, its molecules move farther apart, making ice less dense than water.
Hope this helps :)
Explanation:
What adaptation allows organisms to survive in the supralittoral zone of a rocky beach
Answer:
The ability to both attach to solid materials and endure long periods of time without water
How does society affect science? Check all that
apply.
The needs of society help determine the
types of research conducted.
Society allows scientists to conduct any type
of research they wish
Society regulates research that might pose
ethical challenges.
Society encourages research that promotes
individual welfare.
Answer:
A C D
Explanation:
Edg 2020
Society encourages research that promotes individual welfare.
What is science?
Science consists of a observing the world by watching, listening, observing and recording. Scientific method usually means series of steps that scientists follow to discover how nature works.
Science is a systemic and logistic approach to discover new things. It is derived from a word "scientia". In our society people encourages that research that promotes individual welfare.
Society does not regulates research that might pose ethical changes. The needs of society helps to determine the type of research conducted.
Some of the steps in scientific methods are:
To make an observation.To form a hypothesis.Test the hypothesis.Analyze the data.Perform the experiment.Therefore, Society encourages research that promotes individual welfare.
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Question in picture, I’m stuck on this one it’s pretty easy but I’m not sure what it is.
Answer:
Trait
Explanation:
You get it from your ancestors
How are prokaryotic and eukaryotic cells the same?
both contain DNA, cytoplasm and ribosomes
both contain a nucleus, ribosomes and cell walls walls
both contain DNA, ribosomes and flagella
both contain a nucleus, mitochondria and chloroplasts
Answer:
Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes
Explanation:
Answer:
A prokaryotic cell, an eukaryotic cell has a plasma layer, cytoplasm, and ribosomes, yet an eukaryotic cell is commonly bigger than a prokaryotic cell, has a genuine core (which means its DNA is encircled by a film), and has other film bound organelles that take into account compartmentalization of capacities.
A condition in which a cell grows without control and divides too much is__.
1. Georgina is a rock collector. She is looking at some information about two of the
rocks she has collected on her travels. The information is as follows:
• Rock A formed from small pieces of rock.
• Rock B formed from liquid rock in a different place.
• Rocks A and B formed at about the same time.
Are Rocks A and B the same or different types of rock?
The rocks are
a the same type because they are both formed from rock material.
b the same type because they formed at the same time.
c different types because they formed in different ways.
d different types because they formed in different places.
Answer: C) different types because they formed in different ways.
Hope this helps!! :D
Rocks A and B are different types because they formed in different ways.
What are the different types of rocks?Igneous rocks are created by the melting of rock deep within the Earth.Sand, silt, dead plants, and animal skeletons combine to form sedimentary rocks.Metamorphic rocks are created from other rocks that have been altered underground by heat and pressure.learn more about types of rocks here:
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1. In what type of relationship do both organisms benefit from the relationship?
A. Parasitism
B. Mutualism
C. Commensalism
D.Predation
2. How is predation important to the stability of both the predator and the prey?
3. Why would a parasite harm its host but not want to kill it?
help me help me help me help me help me
Lysosomes are responsible for...
A. clean up of the cell.
B. storage of nutrients.
C. protein synthesis.
Which cell organelle is most similar in function to an organism’s nervous
system?
Answer:
Nucleus
Explanation:
It has DNA which contains all information in the form of genes .genes are sequence of nucleotides .
True or False Every relation that is linear, must also be a function.
Answer:
False False Flase Flase
Answer:
False
Explanation:
False because not Every relation is a function.
What is refforestation
the process of replanting an area with trees
