The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.  Which species is most closely related to species W?

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#Question id: 4598

#Section 2: Evolution

Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. Thrinaxodon may have been warm-blooded. The fossils of Thrinaxodon are consistent with the hypothesis that ________.

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#Question id: 9259

#Section 2: Evolution

The oceans affect the biosphere in all of the following ways except

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#Question id: 11247

#Section 2: Evolution

The theoretical maximum population size that can be supported indefinitely in a given habitat is the _____________.

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#Question id: 16879

#Section 3: Mathematics and Quantitative Ecology

Suppose a 95% confidence interval for the proportion of Americans who exercise regularly is 0.29 to 0.37. Which one of the following statements is FALSE?

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#Question id: 10734

#Section 1: Ecology

This term is a measure of the ability of a system to resist change in the face of outside influences.