In a graded bed, the particle size
A. decreases upward
B. decreases downward
C. stays the same
D. increases in the direction of the current
Answer: A
Environmental & Atmospheric Sciences
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When a species disappears from the earth, it is said to be biologically extinct.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
The Pacific islands in the 1800s were of interest primarily to
A. the Polynesian empire builders. B. naturalists like Darwin. C. pirates. D. whalers and missionaries.
Environmental & Atmospheric Sciences
The lithosphere is composed of the ________ and the rigid part of the ________
A) outer core; inner core B) mantle; outer core C) crust; lower mantle D) crust; upper mantle
Environmental & Atmospheric Sciences
Which continent has more than 12,000 cubic kilometers of water available per year?
-Australia -North America -Asia -Europe -Africa -South America
Environmental & Atmospheric Sciences