Answer:
a system
Explanation:
it's like how stomach , small intestine , large intestine together form digestive system and how trachea , lungs , alveoli for respiratory system and so on
Central vacuole. That is the part of the plant that stores most of the water. It is the really large sac you can see in plant cells but you don't see it in animal cells:)
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: Amylase
Explanation: it’s a enzyme in the saliva that breaks down starches like the pasta that helps digest the food
