Consider the accompanying figure and then explain how the movement of the continents can help explain why some species have the geographic distribution that is observed today.

What will be an ideal response?


Species that arose or were present at the time of the unified continents would have been able to expand broadly. As the continents began to move apart those species would have become isolated from one another.

Environmental & Atmospheric Sciences

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A cone of depression can develop in:

a. the water table b. the potentiometric surface c. the hydraulic conductivity d. both a and b

Environmental & Atmospheric Sciences

North Atlantic hurricanes all have an eye diameter of ________.

A. 50-75 km B. 1-5 km C. 16-70 km D. 10-20 km

Environmental & Atmospheric Sciences

The neptunian view that igneous rocks precipitated from seawater was eventually replaced by the

hypothesis of the molten origin of igneous rocks called _______. This interpretation was based upon the observations of James Hutton. Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

In regard to sea surface temperature (SST), as one travels toward the poles SST

A. decreases. B. increases. C. remains constant. D. decreases and then increases.

Environmental & Atmospheric Sciences