Answer:
Option B
Explanation:
Option D is incorrect, as increased photosynthesis would increase oxygen supply present, not carbon dioxide supply.
Option C is incorrect, as increased decomposition would increase carbon dioxide released and oxygen present is reduced, not increased.
Option A is unlikely as if this were the case, increased oxygen levels would enable bluegill fish to survive as well.
The answer is adrenal gland
Usually during exercise, unlike during rest times the muscle cells need to respire more. So they need more oxygen and glucose for energy and the carbon-dioxide produced as waste must be removed quickly. So when person gets tired or breathes heavily during intensive workouts means they are in need of more oxygen. So the cells starts performing anaerobic(lactic acid ) respiration even though it releases less energy.
Explanation:
From the guts of several ruminants especially cow ,where it contains bacteria called Methanogens which is a type of Archaebacteria .
Methanogens are responsible for production of Methane gas from the dung of the cow
The correct answer is a. cilia
