Which mode of transit has the greatest energy consumption?
A. Sedan
B. SUV
C. Bus during peak hours
D. Bus during off-peak hours
E. Pickup truck
Ans: D. Bus during off-peak hours
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The procedure in which a patient’s blood is sent into a filter to be cleaned and then returned to the body is ____
a. peritoneal dialysis b. hemodialysis c. uro-dialysis d. lithotripsy dialysis e. hydro-dialysis
Certain orchids produce flowers and secrete scents that resemble female bees so that male bees will
mount these flowers and attempt to copulate with them. This bizarre occurrence is an example of: a. fertilization. b. coevolution. c. apomixis. d. self-pollination. e. asexual reproduction.
Although they are mammals, monotremes lack
A) ovaries in females. B) nipples. C) mammary glands. D) hair. E) a four-chambered heart.
From studying ecosystems and biomes, it may seem as if there is complete "bottom up" control, that the producers determine the life and success of the ecosystem. Yet closer examination shows "top down" control by the third trophic level is essential as
well. Evaluate why this is so, citing at least one good example. What will be an ideal response?