Answer:
Option C
Explanation:
The null hypothesis is the problem statement and alternative hypothesis is counter of the null hypothesis.
Hence, the null hypothesis here is the rate of extinction was neither higher nor lower when there were sudden climatic changes (asteroid strike)
And alternate hypothesis is "the rate of extinction was either higher or lower when there were sudden climatic changes (asteroid strike)"
Hence, option C is correct
Which statement is best supported by the data on the map?
A. All countries have beryllium deposits, but some have more
deposits than others.
B. Some countries have many sources of beryllium, and some have
no sources of beryllium.
C. All the beryllium used in the United States must come from other
countries.
D. Only people in countries that have beryllium deposits are able to
have cell phones.
Answer:
B. Some countries have many sources of beryllium, and some have no sources of beryllium.
Explanation:
Beryllium is a very important mineral that is present in many countries. All countries did not have beryllium deposits. Some countries have many sources and deposits of beryllium, and some have no sources of beryllium. There are many deposits of beryllium in different parts of United states of America. Those countries which have no beryllium deposits have cell phones because they purchase cell phones from international market by paying money which can be earned through selling of its goods.
Which is a property of ultraviolet C (UVC)?
a. has the longest wavelength
b. is the least reactive
c. is the least absorbed by the stratosphere
d. is the most reflected by Earth's surface
e has the most energy
Answer:
e
Explanation:
ultraviolet rays are most energetic than visible
What would happen to the bison population if a
drought caused many of the grasses in the prairie
ecosystem to die?
O A. The bison population would decrease
quickly
O B. The bison population would not change in
response to a change in the amount of
grasses.
C. The bison population would increase
quickly.
D. There is not enough information to form a
hypothesis about a change in the bison
population in response to a change in the
amount of grasses.
Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park, which destroyed most of the vegetation but left the soil intact?
Answer: secondary succession
Explanation:
¿cual es la impoortancia de la fotosintesis para la vida en la tierra?
Answer:
La respuesta está en la explicación. Espero que sea útil.
Explanation:
La fotosíntesis es importante para los organismos vivos porque es la principal fuente de oxígeno en la atmósfera. Sin la fotosíntesis, el ciclo del carbono no podría producirse, la vida que requiere oxígeno no sobreviviría y las plantas morirían.
Si lo he entendido mal, pido disculpas. También estoy utilizando un traductor, por lo que puede ser incorrecto.
Question 13: I need help please
Answer:
A
Explanation:
what is a cell mention any one function of it
Answer:
A cell is the structural and functional unit of life. Each cell contains smaller organelles that perform various functions such as metabolism, transportation and secretion of substances. ... The various structures and organelles in a cell float in a liquid called the cytoplasm
When cells are dividing,it is
important to understand that
they have to move
chromosomes equally to both
cells. Based on this illustration ,
describe what chromosome is made of
Answer:
idrk i just ans cuz i need points
Explanation:
same thing here
black worms are detritivores. what does that mean?
Answer:
detritivores is a animal who feeds on dead organic things such as plants.
identical cells are produced at the end of mitosis
How does an inhaler work?
Answer:It works by relaxing the muscles of the airways into the lungs, which makes it easier to breathe. Salbutamol comes in an inhaler (puffer). Salbutamol inhalers are usually blue. Salbutamol is sometimes given as tablets, capsules or syrup for people who cannot use an inhaler very well.
Explanation:
Please help me with these science questions about ecology!
Circle the letter of the choice that best completes the statement or answers the question.
11. Energy that is lost at each trophic level of an ecosystern is replenished by
a. heat.
b. nutrients.
sunlight
c. sunlight
d. organisms.
12. Besides energy, what moves through the organisms at each trophic level of an ecosystem?
a. organisms
b. nutrients
c sunlight
d. cycles
13. Evaporation and condensation a part of the
a. carbon cycle.
b. nitrogen cycle.
c phosphorus cycle.
d. water cycle.
14. Plants lose water to the air through
a. condensation
b. photosynthesis.
c. Their roots.
d. evaporation
15. Animals lose water when they
a. breathe in
b. urinate.
c breathe out
d. both b and c.
16. The major process by which water in the atmosphere is returned to the earth is
a. precipitation
b. evaporation
c. photosynthesis.
d. decomposition.
17. Autotrophs and heterotrophs use carbon-containing molecules for energy and for
a photosynthesis.
b. growth.
c decomposition
d. both a and b.
18. What do plants use in photosynthesis to make carbon-containing molecules?
a carbon dioxide
b. carbohydrates
c. fertilizer
d. oxygen
19. Heterotrophs get carbon-containing molecules by
a. making the molecules themselves.
b. feeding on other organisms.
c decaying.
d. growing.
20. When decomposers break down the carbon-containing molecules in dead organisms,
a. the dead organisms are converted to coal.
b. oxygen is released.
c carbon dioxide is released.
d. carbon dioxide is converted to energy-rich
carbon-containing molecules.
Answer:
11 is A. 12 B. 13 A. 14.D 15. C 16. D
How do fungi play roles in the death and the life that happens in a
forest?
Answer:
They decompose dead organisms. Also, some fungi helps other organisms obtain nutrients that the organism cannot obtain
Explanation:
Which of the following is a SLOW process that changes Earths surface?
A. Flooding
B. Earthquake
C. Wind erosion
D. Volcanic eruption
Answer:
I would say C:wind erosion
Explanation:
can I have brainliest
Why are phytoplankton important in the carbon cycle?
Answer:
Microscopic marine phytoplankton play a critical role in regulating todays carbon cycle yet not enough is known about the process. These tiny organisms consume carbon dioxide from atmosphere and move it to marine sediments in deep ocean. And this process is also known as biological pump.
Explanation:
plz give me brainliest if you like this answer
Discuss 2 pros and 2 cons of selective breeding associated with different factors (social,
economic, environmental, ethical)
Answer/Explanation:
Pros
1 ) Qualities that benefit the species can be chosen to be passed on to the offspring.
2 ) When more of the animals (humans included) will have less competition if their mate is predetermined.
Cons
1 ) If certain traits are preferred and passed on selectively, the genetic diversity of the group will suffer.
2 ) We were made from Darwinian evolution, a natural evolution, so is it right to take that into our own hands and play god.
Mistletoe contains root-like structures that penetrate the branches of oak trees, where they absorb water and minerals from the oak tree. This is an example of --
A- predation
B- competition
C- parasitism
D- commensalism
In rabbits, black fur (B) is dominant to brown fur (b). Consider the following cross between two rabbits.
Bb x Bb
B
b
B
1
2
b
3
4
Refer to the illustration above. The device shown, which is used to determine the probable outcome of genetic crosses, is called a
Answer:
Punnet square
Explanation:
Which of the following statements is true?
Algae belong to the Plantae kingdom.
Bacteria belong to the Protista kingdom.
Organisms in the Monera kingdom are prokaryotes.
A red rose and a pink rose are variations of the same species.
Answer:
Yeah it was the third one bud
Explanation:
What does corn, dogs, and genes have in common.
Answer:
Artificial Selection or “ Selective Breeding”
aka the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
The commonality between corn, dogs, and genes is that they can all be subject to genetic modification or genetic engineering.
Corn is a commonly genetically modified crop, where specific genes are added or removed to achieve desired traits such as resistance to pests, herbicides, or environmental stresses.
Dogs are also subject to genetic modification through selective breeding, where specific traits are selected for and bred over time to achieve a particular outcome, such as a specific appearance or behavior.
Genes are the fundamental units of genetic information that determine an organism's characteristics, and they can also be subject to genetic modification through techniques such as gene editing or gene therapy, which can modify or replace specific genes to treat genetic diseases or enhance desired traits.
Therefore, the common theme among corn, dogs, and genes is that they are all subject to genetic modification in one way or another.
Learn more about genetic engineering, here:
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Describe what you believe a chemical rxn is ? Use the lab to describe it in 3 or more sentences.
Answer:
Please find the description of a chemical reaction below.
Explanation:
A chemical reaction is a type of reaction involving two or more substances in which the atoms or molecules that constitutes each substance are rearranged. In other words, a chemical reaction alters the chemical nature of the substances involved.
In a chemical reaction, substances called REACTANTS are changes or transformed into other substances called PRODUCTS. In a laboratory, chemical reactions are carried out when two or more substances are mixed together to form new products.
Use insulin and glucagon as examples, explain how negative feedback of these two hormones regulate the blood glucose level and maintains homeostasis. (No links or I'll Report
Answer:
glucagon works to counterbalance the effects of insulin.
Explanation:
when insulin is released, the blood sugar in the body decreases; however, when the blood sugar is low enough, the system instead releases glucagon which breaks down the stored sugar and balances the blood sugar level in the body. if the level goes too high then insulin will be released again.
How does the cell membrane contribute to the ability of a cell to exists in a changing
environment and still maintain homeostasis?
Answer:
One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.
Please give me a brainliest
What color face do you think the cloned sheep will have?
Answer:
it would depend on the mammary gland cell
Explanation:
Dolly's white face was one of the first signs that she was a clone because if she was genetically related to her surrogate mother, she would have had a black face. Because Dolly's DNA came from a mammary gland cell, she was named after the country singer Dolly Parton.
if you have 6% guanine how much of the other bases do you have? please hurry
100% total of all 4 bases and Guanine and Cytosine need to have 1:1 ratio and Adenine and Thymine need to have 1:1 ratio (This is the Chargaff's rules I think)
6% Guanine must also mean 6% Cytosine
6 + 6 = 12 100 - 12 = 88 88/2 = 44
So 44% of Adenine and 44% of Thymine
Explain the role of adrenaline in the formation of emotional memories.
Blood type is determined by multiple alleles and can be used to determine the possible parents of an offspring. In this case, the mother has blood type B, and her child has blood type A. There are two possible fathers for this child. The phenotype of one man is type O, and the phenotype of the other man is type AB. What is the genotype of the man who is the father?
A. IAIB
B. IAio
C. ioio
D. IBio
Answer:
A. IAIB
Explanation:
Since the child has blood type A and the mother is B, one man having blood type O makes it so that the child cannot be blood type A.
IAIB is the genotype of the man who is the father.
What are Genotypes?The type of variant present at a specific locus (i.e., region) in the genome is scored by what is known as a genotype. Symbols can be used to symbolize it.
For illustration, BB, Bb, and bb could be used to denote a certain gene variant. The actual DNA sequence, such as CC, CT, or TT, can also serve as a representation of a genotype.
In a single experiment, the genotypes at millions of sites in a genome can be determined using DNA sequencing and other techniques. Some genetics influence an individual's phenotype, or observable traits.
Therefore, IAIB is the genotype of the man who is the father.
To learn more about Genotype, refer to the link:
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how is a tree a biotic factor
Answer:
You could say the dead tree is now an abiotic factor because biotic factors refer to living things. The tree is no longer living, thus it is not a biotic factor. Alternatively, you could argue that the tree was once living and biotic factors are things that are living or were once living. Thus, the tree is a biotic factor.
Use scientific language to describe two ways that embryos and fossils are different.
Answer:Fossils are the remails of an organism and the embryos are a stage of developing a multicellular organism.
Explanation:
It is widely accepted that living organisms are made of cells. This belief is confirmed by many years of scientific observation that has been supported by large amounts of data. Which of the following statements is included in the modern Cell Theory? *
I and II
II and IV
I and III
I and IV
Answer:
I and IV
Explanation:
I am not 100% sure, but I think it is 1 and 4.
Hope this helps and tell me if I was right, thank you :) !!
Answer:
The last one, I'm pretty sure
Explanation: