Bioremediation has been particularly effective in marine ecosystems in the clean-up of:

a. heavy metals.
b. hydrocarbons.
c. thermal effluents.
d. pesticides nitrates.

Ithink i'm not for sure i'm pretty sure embargo

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!

I'm going to say it's 5-6 million