Disturbed deserts and marginal grasslands are slow to recover because
A plant growth is slow and there is little water
B the flora become too diverse genetically
C excessive water drowns out essential nutrients
The answer was A. plant growth is slow and there is little water
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Most of Minnesota's lakes are
A) formed by outwash streams. B) formed by blockage of a valley with an end moraine. C) formed by glacial overdeepening. D) kettle lakes.
The principle of ________ states in an undeformed sequence of sedimentary rocks each bed is older than the one above and younger than the one below
A) cross-cutting relationships B) lateral continuity C) superposition D) original horizontality
Briefly compare the population policies of China and India
What will be an ideal response?
Unlike industrial smog, photochemical smog occurs in regions that
A) experience frequent fog. B) generate electricity by burning coal. C) are far away from large bodies of water. D) have high levels of sunshine.