Answer:
ok sike i lied you thought i tried
Explanation:
A niche is a specie's function in its habitat or its level on the food chain, so two species competing at the same level for the same food and habitat eventually one species will have to migrate or starve due to lack of food.
From an area of high concentration to an area of low concentration.
This question is incomplete. However, it seems to indicate that the vials contain aerobic bacteria. These are bacteria that require oxygen to respire and grow. The bacteria in the sealed vial will be deprived of oxygen, and would therefore not grow. Those in the crushed vial will be exposed to oxygen and would therefore be able to grow.
