Chemosynthetic communities are found associated with ________.
A. hydrothermal vents
B. salt brine seeps
C. oil and gas seeps
D. All of these are correct.
E. None of these is correct.
Answer: D
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All of the following statements describe field research except
a. It involves going into natural settings to observe the structure of ecosystems. b. It is sometimes called "muddy-boots biology". c. It has provided very little in the way of knowledge about ecosystems. d. Most of what we know about ecosystems has come from such research. e. It involves measuring the structure of ecosystems and what happens in them.
This is the least likely reason for the removal of carbon dioxide from the atmosphere:
A) leakage into space from the upper atmosphere. B) incorporation into solid material. C) dissolution into oceans, lakes, and rivers. D) dissolution into raindrops.
Instructions: Choose one answer from each pair of selections. At night, cold air and pollutants move UPHILL FROM | DOWNHILL TO low-lying valleys
Describe the circulation of deep ocean water
What will be an ideal response?