Moh's scale is defined on the basis of minerals that have different
A) cleavage directions.
B) colors.
C) hardnesses.
D) shapes.
C
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Which of the following best describes the Pleistocene?
a. warm, humid period of swamps and forests when dinosaurs roamed Earth b. most recent climate interval characterized by warm, stable conditions c. four major glacial cycles slowly followed by shorter, warmer interglacials d. complex record of climate changes characterized by cycles of rapid advance and retreat of glaciers
Global climate change may cause shifts in biomes because _____
A) biodiversity and day length will change B) mean temperature and precipitation for many areas will change C) many species may become extinct D) food web dynamics will change
How is it possible that coastal deserts exist in such a close proximity to ocean moisture?
What will be an ideal response?
Aristotle's view of natural laws is best understood by
A. reasoning. B. patterns. C. mathematics. D. experiment.