The class Reptilia is a group of species that share a common ancestor and some, but not all of its descendants. It is
therefore considered ____.
a. monophyletic
b. polyphyletic
c. paraphyletic
d. an outgroup
e. a domain
ANSWER: c
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Clearly differentiate between the following terms: gross primary productivity and net primary
productivity. What will be an ideal response?
Interference competition is also called contest competition. Indicate whether the statement is true or false
The endogeneity problem that results from when a variable correlated with the treatment is not included as a control variable is known as the:
A. instrumental variable. B. weak instruments problem. C. omitted variable bias. D. least efficient estimator.
A molecule that consists only of carbon and hydrogen atoms is called a _______________.
A. hydrocarbon B. nucleic acid C. sugar D. starch E. carbon