Which of the following helminth parasites do humans acquire by eating undercooked saltwater fish?
A) Schistosoma
B) Fasciola
C) Echinococcus
D) Anisakis
E) Ascaris
D
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Examine Figure 48.5 in your text. According to this figure, mean temperature changes from 1940–1980 and 1999–2008 have been greatest:
A. in Australia. B. in southern Africa. C. near the equator. D. in South America. E. in the northern hemisphere.
Which structure is used for excretion and
reproduction? a. A b. B c. C d. D e. none of these
Only in judging human behaviors does the concept of
__________ supplant adaptation. a. self-sacrifice b. altruism c. judgment d. morality e. indirect selection
In a field experiment, an ecologist measures the effects of nitrogen on productivity, plotting data for nitrogen on the x-axis and productivity on the y-axis. In this experiment, the dependent variable is ________
Fill in the blank(s) with correct word