The first fully land-based animals were ________
A) stromatolites B) reptiles C) cephalopods D) amphibians E) eukaryotes
B
Environmental & Atmospheric Sciences
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Precipitation in the humid subtropical summers is primarily:
a. cyclonic. b. convectional. c. orographic. d. frontal.
Environmental & Atmospheric Sciences
How will rock salt likely respond when put under stress?
A) It will fault B) It will bend or flow C) It will dissolve D) It will fragment
Environmental & Atmospheric Sciences
The area of Africa is approximately 11.7 million square miles. Which of the following is the correct way to express this number in scientific notation?
A) 1.17 x 10^5 B) 1.17 x 10^6 C) 1.17 x 10^7 D) none of these
Environmental & Atmospheric Sciences
Methane is one of the "greenhouse gases." ________ is (are) a primary source of release of methane into the atmosphere.
Environmental & Atmospheric Sciences