C. a rise in blood carbon dioxide concentration
Explanation:
Negative feed back mechanism refers to the control mechanism in which a product of a particular pathway controls the switch on and switch off of that particular pathway.
Since breathing increases the blood oxygen concentration and lowers carbon dioxide concentration and pH. The sensors that regulate the breathing should respond to oxygen concentration as the carbon dioxide is the by-product of respiration and is responsible for increasing blood pH. Thus increased Carbon dioxide levels in blood is the only factor which will trigger breathing.
It is true because of the copacity.
Whenever a new drug, device, or food, is developed for use in animals, It has to be approved by the FDA before it can be sold and marketed to the public.
Don't use the exact words, I copied it from an FDA website so change the wording first before you submit. Good luck Lol.
Answer:
<em>The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2.</em>
Explanation:
CUZ I AM SMART TRUST ME I DID THIS IN A TEST
The answer is A. the presence or absence of an envelope
