The angle of repose of sand is ____
a. ?lower for damp sand with small grain size
b. ?always higher for large grain size
c. ?always lower for large grain size
d. ?always higher for damp sand
e. ?always higher for dry sand
ANSWER: d
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The term malnutrition refers to people who
a. eat less than the basic minimum number of daily calories b. eat balanced meals c. eat too much d. suffer from lack of protein and other key nutrients e. eat too much protein
The major ions of seawater are those which ________.
A. have residence times that are short relative to the mixing time of the oceans B. are used by living organisms to build their soft tissues C. do not vary from place to place in the oceans, except as salinity varies D. None of these is correct E. All of these are correct
Primary and secondary ecological successions tend to increase biodiversity of communities and ecosystems by increasing species richness and interactions among species.
Answer the following statement true (T) or false (F)
The process of assimilation includes the incorporation of felsic country rock. Indicate whether the statement is true or false