The primary producers for hydrothermal vent
ecosystems are
a. chemoautotrophs.
b. chemoheterotrophs.
c. phytoplankton.
d. cyanobacteria.
e. algae.
Answer: a
Biology & Microbiology
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What structural feature allows land animals to
exchange gases?
a. gills b. moist skin c. digestive system d. lungs e. nasal passage
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Place the steps in the pathway of the G protein cycle in the proper order
What will be an ideal response?
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Refrigeration is an effective germicidal method
Indicate whether the statement is true or false
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