Between 54 million and 34 million years ago Europe and America
a. were separated by only a narrow sea
b. had very different climates
c. supported different sets of primates
d. were connected by land
Answer d
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To reconstruct human behavior at Agate Basin, Hill needed to search for meaningful patterns in bone data, and this required he count the bones
Indicate whether the statement is true or false
Darwin argues that:
a. there is biological variation within all species. b. fitness is a measure of how healthy and physically adapted an individual is. c. ?there are fewer selective pressures on well-adapted species. d. individuals who have more resources are reproductively successful. e. in each generation all offspring survive in the most adapted species.
A. afarensis was sexually dimorphic, which means that __________.
A) their teeth were used for reproductive displays B) they lived in long-term pair bonds C) the males had larger body sizes than the females D) they had twin offspring, one male and one female