Along coastlines, the area between high tide and low tide is the
A. hydrothermal vent.
B. continental shelf.
C. intertidal zone.
D. estuary.
E. open ocean.
Answer: C. intertidal zone.
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In looking at the species—area plot in the figure above, what can be concluded?
A) Number of bird species increases linearly with island area. B) Number of bird species remains the same on these various islands. C) Diversity is independent from island area. D) Number of bird species increases exponentially with island area.
Prokaryotes ____
a. have a nucleus b. are multicellular c. always have cell walls d. are either bacteria or archaeans e. always have flagella
What is the equation relating flow to resistance and a pressure gradient?
A) flow = pressure × resistance B) flow = pressure gradient / resistance C) flow/resistance = 1/pressure gradient D) flow × resistance = 1/pressure gradient E) flow × resistance = pressure × gradient
In a case of positive feedback, an increase in the stimulus causes ______ in the response and does not result in homeostasis.
A. a slight decrease B. an increase C. no change D. a large decrease