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.
Answer:
The three parts of a nucleotide are:
- A phosphate group
- Nitrogenous base
- Five-carbon atoms
Explanation:
These are the three parts that make up a nucleotide.
I think it should be A, not 100% sure tho
Over time, the toxins from inhaled cigarette smoke break the thin walls of alveoli, leaving larger, less efficient air sacs. The sacs also begin to lose their bounce, making it harder to bring in the oxygen and expel carbon dioxide. 3 Both can become partially trapped in the lungs.
Answer:
I'm not sure I could say the sun because that's where the grass gets its energy but some people also would just say the grass but it's down to those two
