Organisms in the deep sea must tolerate
a. low temperatures and high nutrient levels.
b. low temperatures and moderate nutrient levels.
c. moderate temperatures and low nutrient levels.
d. low temperatures and low nutrient levels.
Answer: D
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When scientists are attempting to breed for increased ability of a plant to utilize carbon dioxide they must consider improvement of:
A. stomatal openings B. bundle-sheath cells C. mesophyll air spaces D. chlorophyll production E. stress tolerance
Algae may directly infect humans and cause disease
Indicate whether this statement is true or false.
What are the two main features of prokaryotic binary fission?
What will be an ideal response?
Anthrax, which means "charcoal" in Greek, derives its name from
A. the airborne endospores it produces. B. the staining properties of the bacillus under the microscope. C. the black eschars it produces on human skin. D. its ability to invade the bloodstream and produce toxemia. E. the high mortality it causes in infected individuals.