What is the biological pump?
a) Osmosis pushes nutrients across cell membranes, allowing the nutrients to get from the bloodstream to where they are needed by the cells.
b) Photosynthetic organisms take in carbon dioxide and give off oxygen.
c) Photosynthetic organisms use sunlight, carbon dioxide, and water to create energy.
d) The removal of nitrogen from the water by biologic productivity
e) The removal of organic matter and nutrients from surface water to deep water through the sinking of dead surface-dwelling organisms
E
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relating to or denoting evolutionary convergence. (of thought) tending to follow well-established patterns.
What will be an ideal response?
European countries have progressed to the point where the concept of forming or remaining a(n) _______________ is a driving force in many political sectors.
-nation-state -common market -empire -cultural center -colonial power
The Moon’s surface was heavily cratered through the bombardment of _________. Fill in the blank(s) with the appropriate word(s)
Which is the primary source of nutrients for estuaries?
A. rivers B. rainfall C. atmosphere D. open ocean