In what decade was the Clean Water Act passed? (Several major pieces of environmental legislation were passed in this decade, which also saw the creation of the EPA.)

A) 1910s
B) 1950s
C) 1970s
D) 1990s
E) first decade of the 2000s


C

Environmental & Atmospheric Sciences

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a. The mineral’s hardness b. The mineral’s color c. The mineral’s electrical conductivity d. The mineral’s solubility

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in the electromagnetic spectrum, visible light occupies the band between 0.4 and 0.7 _______.

a - meters b - feet c - micrometers d - millibars e - kelvins

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________ is not a characteristic of stream flow

A) Gravitational influence B) Overland flow C) Sediment transport D) Erosion E) Traction

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Which of the following is not a process of cultural change?

A) segregation B) diffusion C) innovation D) acculturation

Environmental & Atmospheric Sciences