During the Paleocene, __________
a. temperatures were cooler than those of today
b. many flowering plants went extinct
c. many new mammal species appeared
d. a massive asteroid or comet smashed into the earth
Correct Answer: c
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The populations of Germany and Japan are both __________
A. doubling every 23 years B. increasing at a rate of 2 percent a year C. stable and unchanging D. decreasing
Sexual dimorphism refers to reproductive differences among mammal species
Indicate whether the statement is true or false
Refer to the figure below. At the 30th unit of action, which of the following is true?
![](<img src="[url-placeholder]/files/000dd03b9f1748ad25.png" class="w-image" />)
A) Marginal cost exceeds marginal benefit.
B) Marginal benefit exceeds marginal cost.
C) Total losses are minimized.
D) Total gains are maximized.
The evolution of primate intelligence may be based on:
A. the difficulties imposed by living in a social group B. the challenge of exploiting fruit as a resource C. the association of intelligence with language ability D. the difficulties imposed by living in a social group and the challenge of exploiting fruit as a resource E. all of these