Most persistent organic pollutants enter food webs at the level of

A) primary producers.
B) primary consumers.
C) secondary consumers.
D) decomposers and detritus feeders.


A

Environmental & Atmospheric Sciences

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Salt and freshwater mix in ________where rivers empty into an ocean.

Fill in the blank(s) with the appropriate word(s).

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A negative phase of the Indian Ocean Dipole (IOD) results in warmer than average surface waters at ________ and cooler than average waters at ________.

A. A; D B. A; C C. C; A D. C; B

Environmental & Atmospheric Sciences

How much of the Earth's atmosphere lies below 32 km altitude?

A. 89 percent B. 99 percent C. 59 percent

Environmental & Atmospheric Sciences

Why is indoor pollution still such a large problem in developed nations? What are the most dangerous indoor pollutants in developing and developed nations?

What will be an ideal response?

Environmental & Atmospheric Sciences