In a hypothetical land ecosystem, plants (the primary producers) capture 1000 kilocalories of sunlight energy per
square meter per year. Approximately how many kilocalories of the plant’s energy will be harvested by the third trophic
a. 1
b. 10
c. 100
d. 1000
e. 2000
ANSWER: b
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During the inventory of bacterial genes present in the Sargasso Sea in the middle of the Atlantic Ocean, a research team concluded that at least 1800 bacterial species were discovered
Based on what you know about this area, what would you expect to see in coral reef waters? A) slightly greater genetic diversity B) slightly smaller genetic diversity C) equal genetic diversity D) markedly greater genetic diversity E) markedly smaller genetic diversity
__________ determined the structure of the molecule DNA
a. Crick and Wilkins b. Watson and Crick c. Franklin and Crick d. Franklin e. Watson, Crick, and Wilkins
As John walked outside the ballpark, a foul ball sailed over the fence and came straight at him. He saw it, and before he could think of what to do, he had reflexively jumped out of the way. What part of the brain saved John from a nasty bump?
A) hypothalamus B) pons C) medulla oblongata D) midbrain
A dichotomous dependent variable is a variable that:
A. cannot be used to identify causal effects. B. can take on just two values, typically recorded as 0 and 1. C. requires that you use OLS to estimate any determining function. D. leads to biased estimates of the coefficient of interest.