Answer:
Receptors in the brain detect low oxygen or high carbon dioxide and send signals to the body, which can change the breathing rate. ...
option C
Answer:
B. Evolution
Explanation:
The change in allele frequencies from mostly light wings to dark wings has been commonly studied in evolution. It's a great example of natural selection favoring the more fit phenotype, in this case the dark that can blend in better with darker trees and darker, smoggy environment.
- Why not competition: This doesn't have to do with limited resources.
- Why not acquired: Lamarck's theory of acquired traits is defunct!! Don't fall for it!!
- Why not overpopulation: This was not hinted at in the question.
<span>it the lactic acid and pyruvic acid I think</span>
A hypothesis refers to a suggested illustration for a phenomenon. For a hypothesis to be a scientific hypothesis, there is a need to test it. Upon analysis, a hypothesis can be modified or rejected, but it can never be proved 100 percent accurate.
A hypothesis needs more work by the individual testing it in order to either disprove or confirm it. A working hypothesis refers to a hypothesis, which is tentatively accepted as a foundation for a further research.
