Answer:
Option (A).
Explanation:
The element mercury can persist in the environment and proves to be harmful for the living organism. The mercury persist in the lower organism and transfer to the higher organism by the process of biological magnification.
The compounds of methyl mercury are not harmful. The methyl mercury compound cannot cross the blood-brain barrier and does not affect the individual.
Thus, the correct answer is option (A).
Six dears migrated, this is the answer because immigration and emigration are both acts of migration.
Answer: Amino acids combine to make proteins.
Explanation:
The ultimate purpose of life is to reproduce and pass on the genes to the offspring.
