Most of the electromagnetic spectrum consists of visible light

A) True
B) False


B

Environmental & Atmospheric Sciences

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From this cross section of the Grand Canyon, what is the boundary between the various Precambrian rocks and the Paleozoic sedimentary units?

A. It generally is an unconformity and represents more time in the right part of the diagram than in the left part of the diagram. B. It is a depositional contact, probably representing only a short period of geologic time. C. It is an angular unconformity in most places and a nonconformity where it overlies granite. D. All of these.

Environmental & Atmospheric Sciences

How much of the region experiences average annual rainfall of less than 250 millimeters (10 inches)?

A) 75% B) 80% C) 60% D) 55% E) 85%

Environmental & Atmospheric Sciences

The Chernobyl disaster in 1986 was what type of environmental disaster?

A) a collapse of a poorly regulated dam B) a massive oil spill into the Volga River which flowed into the Caspian Sea C) a massive coal mine fire which continues to burn to present day D) a meltdown of a nuclear reactor which spewed airborne radioactive waste across thousands of acres of farmland E) a dumping of toxic waste into the Arctic Sea causing a massive loss of fisheries

Environmental & Atmospheric Sciences

An atom in which the number of neutrons is different from the number of protons is called a(n) ________

A) chemical B) ion C) isotope D) "rogue" substance E) subatomic particle

Environmental & Atmospheric Sciences