In which of the following time periods were dinosaurs the dominant creatures?

A. Mesozoic
B. Precambrian
C. Cenozoic
D. Paleozoic


Answer: A

Environmental & Atmospheric Sciences

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Arithmetic density is a measure used to define the number of people per unit of arable land

Indicate whether the statement is true or false.

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What is NOT a drawback of hydropower?

A) The electricity generated is incredibly expensive (more than coal, oil, and nuclear power). B) It is disruptive to the natural environment. C) It can increase diseases. D) Silting of reservoirs can occur, which reduces the potential to produce electricity. E) Downstream users of rivers might resent upstream countries damming a river.

Environmental & Atmospheric Sciences

Transportation is one of the most important sources of pollution and making a city walkable is a way to make it a sustainable city.

Answer the following statement true (T) or false (F)

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Latitude is a major control of temperature since latitude determines the Sun angle

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences