Hydrothermal vents support a community of organisms including pogonophorans, clams, crabs, and worms, just to name a few. But hydrothermal vents are found in the deep-sea far from the photic zone. If no light reaches hydrothermal vents, what is the basis of the primary productivity that supports the community?
?Chemosynthetic microbes metabolize sulfur-containing compounds. Other organisms form symbiotic relationships with these microbes, or consume them.
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The Audubon Christmas Bird Count is an example of
A. using greeting cards with images of rare species to promote conservation. B. critical mass. C. citizen science.
What does the following element description actually mean?
O
A. an oxygen atom with 6 protons and 12 neutrons B. 18 oxygen molecules with 6 neutrons each C. 6 oxygen atoms with 18 neutrons D. an oxygen atom with 6 neutrons and 12 protons E. none of the above
A high-grade metamorphic rock whose minerals are segregated into distinct light and dark layers is called:
a) Slate b) Phyllite c) Schist d) Gneiss e) Greenstone
A La Niña tends to encourage dry conditions in which of these areas?
A) The southern United States B) Pacific Northwest of the U.S. C) Indonesia D) South Asia