What is the most environmentally harmful fossil fuel?

A. coal
B. natural gas
C. oil
D. peat


Answer: A

Environmental & Atmospheric Sciences

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Which of the following is most similar in volume to an acre-foot of water?

A) 1,000 Gallons B) An acre covered to a depth of 3 feet (1 meter) C) Most of a football field covered to a depth of 1 foot D) A square mile of land covered to a depth of 3 feet (1 meter) E) 20 Million gallons

Environmental & Atmospheric Sciences

Calcite and halite are both held together by ionic bonds. Calcite has a +2 charge and halite a +1. Which is stronger?

A) halite B) calcite C) they are equally strong D) they are equally weak

Environmental & Atmospheric Sciences

The agricultural movement that has boosted yields by (1) developing high-yield varieties, (2) using large inputs of water and fertilizer, and (3) multiple cropping is called the ________ revolution.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

Day and night have an equal length during a(n) ________

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences