A.
A bird's role in an elephants life is similar to a bird/rhino relationship. The bird typically rides on the elephants back, and eats parasites, bugs, and other bothersome things for the elephant.
This means the bird benefits by having a meal, and the elephant benefits from being protected from ticks and other parasites that might negatively impact it.
They all regulate and support your body’s functions. They all work together by stabilizing each detail and movement of your body and keeps it functioning.
I believe the best answer is A.
People are more afraid in fossil fuels running out rather than the other reasons that don't really affect the people today. Hope it helped!!!
Answer:
Cyclin is a family of proteins that controls the progression of a cell through the cell cycle by activating cyclin-dependent kinase (CDK) enzymes or group of enzymes required for synthesis of cell cycle.
Answer:Determinants
Explanation:
Determinant covers causes, risk factors, mode of transmission (why and how)
