Help please A salmon has higher mercury levels than phytoplankton. This is due to.

a. persistent organic pollution

b. biomagnification

c. food-web magnification

d. bioaccumulation

What best explains the inability for life to exist in earth early atmosphere

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials