____ are responsible for the vast majority of the ocean's primary productivity

A) Seaweeds
B) Chemosynthetic organisms
C) Extremophiles
D) Phytoplankton


D

Environmental & Atmospheric Sciences

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What is the approximate mixing time of the ocean?

A) 160 years B) 1,600 years C) 16,000 years D) None of these choices

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________ soils are common in the equatorial regions of South America and Africa

A) Forest B) Rainforest C) Grassland D) Desert E) Wetland

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Extracting heavy oil produces less greenhouse gas per barrel than conventional oil.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

How many different components make up a nucleoside?

A) 1 B) 2 C) 3 D) 4

Environmental & Atmospheric Sciences