The most recent glacial stage of the Pleistocene in North America was the ________

A) Nebraskan
B) Illinoian
C) Wisconsin
D) Kansan
E) Mindel


Answer: C

Environmental & Atmospheric Sciences

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In human-dominated ecosystems, which of the following features is often lacking?

A) the presence of positive feedback systems B) an ecosystem's ability to grow sufficient food C) the presence of sufficient human infrastructure D) homeostatic regulation E) drought resistant regulation

Environmental & Atmospheric Sciences

Birds are ____________; they generate and regulate metabolic heat to maintain a constant internal temperature. Fill in the blank(s) with the appropriate word(s)

Environmental & Atmospheric Sciences

Hot spots are recorded by

A) extensive earthquake hazards B) mantle rock exposed at the Earth's surface C) rock from the outer mantle included in volcanic rocks D) a sequence of volcanic centers younging toward the hot spot

Environmental & Atmospheric Sciences

Chlorophyll absorbs only the ________ and ________ wavelengths for photochemical operations

A) orange-red; green-yellow B) violet-blue; green-yellow C) orange-red; violet-blue D) yellow-red; violet-green

Environmental & Atmospheric Sciences