The primary purpose of the passage is to

According to the passage, the Progressive historians mentioned in the highlighted text and the scholars mentioned in the highlight text disagree with regard to which of the following?

According to the passage, the computer models(highlight text) referred to have had which of the following effects?

The author mentions the Himalayan Mountains most likely in order to

The passage suggests that geophysicists can now infer the characteristics in a given segment of the mantle by doing which of the following?

The passage is primarily concerned with

According to the passage, which of the following is true of the traditional routes to global expansion?

The author discusses a particular travel agency in the passage most likely in order to

The passage suggests that one of the effects of the deregulation of the airlines was

The findings of the study mentioned in highlight text, if valid for rain-forest regions in general, suggest that which of the following is an obstacle most likely to be faced by those wishing to promote rain-forest preservation by implementing the proposal mentioned in line 1?