When a glacier retreats it leaves behind rocks and there is no living thing present. If succession occurs in such cases, one of the first processes that must take place is
A. an increase in temperature.
B. an increase in the number of kinds of animals.
C. formation of soil.
D. reduction in the amount of water.
C. formation of soil.
Biology & Microbiology
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Diseases that are good candidates for eradication have
A) only a human reservoir. B) no asymptomatic phase. C) an environmental reservoir. D) only a human reservoir and no asymptomatic phase.
Biology & Microbiology
The immediate ancestors of the genus Australopithecus is believed to be the genus:a
Aegyptopithecus. b. Pongo. c. Pan. d. Sahelanthropus. e. Ardipithecus
Biology & Microbiology
Legumes secrete ____ to attract rhizobial bacteria in low nitrogen soils
a. cytokin b. flavonoids c. nod factors d. calcium e. water
Biology & Microbiology
the flap the covers the opening to the lungs during swallowing is the
What will be an ideal response?
Biology & Microbiology