Probiotics main function is to promote healthy bacteria in our digestive system. When a person is sick or exposed to a harmful bacteria the person digestive system becomes unbalanced. Probiotics fight off the invaders and restores the gut health preventing inflammation and infection. While they fight do fight off bad bacteria we can still end up sick from food borne illnesses. Therefore, Option three explains the main idea and role of probiotics in our body.

QUESTION:- The sun shinning on thr surface of a lake can heat up the air just above the water.What happens if this air gets warmer then the air above it?
ANSWER:- If the air gets warmer then the aur above it then the air will go above then the air above on it .
REASON :- It is a rule of wind that it flows from hidh density to low density.
HOPE IT HELPS YOU.
Answer:
They provide nutrients for the growth of plants
Explanation:
When plants and animals die, they become food for decomposers like bacteria, fungi and earthworms. Decomposers or saprotrophs recycle dead plants and animals into chemical nutrients like carbon and nitrogen that are released back into the soil, air and water.
Good luck on your test
The answer is D both processes produce puruvate
I would say immigration only.
emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.
I'm not super great at biogy tho so this might not be right... :)