Answer:
Famine
Explanation:
It is famine because a famine is defined as "extreme scarcity of food."
Answer:
Drastic Change
Explanation:
If a Keystone species was removed from its environment, the area would drastically change, due to the fact that the environment is largely dependant on that species, so removing it from the system would change the way the animals interact with the Environment.
It enters through the stoma.
Answer:
Endorphins.
Explanation:
This is because endorphins are natural chemicals the body produced in order to relieve the body of pains which also belong to the same categories as opoid because opoid are drugs that are administered to people to relieve them in of pains. They can be prescribed for short term use mainly after a surgery.