Which numbered feature(s) on this photograph are consistent with the presence of glaciers sometime in the past?
A) 1, an arête
B) 2, U-shaped valley
C) 3, tarn
D) All of these are correct.
D) All of these are correct.
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List three things that can be done to restore tropical forests so they can be used more sustainably
What will be an ideal response
Countershading of fish ________.
A. reduces their visibility from above and below B. causes them to be more transparent C. is a sign of sexual maturity D. makes them more visible E. None of these is correct; fish do not exhibit countershading.
Judge the following sentence according to the criteria given below: India's Southwest Monsoon provides abundant precipitation BECAUSE the air brought in from the Indian Ocean is warm and full of moisture
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Although the Green Revolution has greatly reduced world hunger and malnutrition, it has
A) doubled the amount of land used to raise crops. B) not significantly increased the productivity of modern agriculture. C) required high levels of increasingly expensive fertilizer and pesticides. D) contributed significantly to the destruction of the ozone layer.