The author of the passage asserts that "the real GDP is almost always higher than ever before" (see highlighted text) most probably in order to

The passage suggests which of the following regarding Henyey's findings about temperature in the San Andreas Fault?

The passage is primarily concerned with

According to the passage, Henyey's findings in 1965 were significant because they

It can be inferred from the passage that when aspen groves experience a "disturbance" (see highlighted text), such a disturbance

According to the passage, which of the following would occur if an aspen grove failed to regenerate periodically?

The primary purpose of the passage is to explain the

The author of the passage would be most likely to agree with which of the following statements about Ketcham?

Which of the following best describes the attitude of the first six Presidents toward political parties as it is discussed in the passage?

According to the passage, the researchers believe that the high frequency of tooth breakage in carnivores found at La Brea was caused primarily by