Ventilation refers to the process by which
A) gases are exchanged between the cells and the lungs.
B) gases are exchanged between the air and the blood.
C) air moves into and out of the lungs.
D) gases are exchanged between the blood and the cells.
E) ATPs are produced.
C
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When the solute concentration of solution A is lower than the solute concentration of solution B, solution A is considered
A. hypertonic. B. hypotonic. C. isotonic.
Which of the following might be expected to increase as a result of predation?
A. competition among prey species B. the availability of resources and niches C. prey population densities D. niche divergence E. extinction of prey species due to competitive exclusion
Genes live at specific locations along a chromosome called a _______.
a. habitat b. locus c. niche d. genetic zone
Which of the following are found in freshwater ecosystems?
a. Succulents b. Coral c. Plankton d. Algae