Water vapor is a greenhouse gas. Why is it not a concern regarding climate change?
A) Water vapor is dense and settles low in the troposphere.
B) There is a low concentration of water vapor in air.
C) Greenhouse gases do not affect the climate.
D) The rate of precipitation balances the rate of evaporation of water.
D
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information on his various expeditions. What will be an ideal response?
A wave period that is representative of a tsunami wave is ________.
A. 5 seconds B. 1 minutes C. 15 seconds D. 20 minutes E. 10 seconds
Why is variety in crop plants important for "food security"? How is this threatened by GM food crops? What is the U.S. position on GM products? How does this differ from the position of other countries?
What will be an ideal response?
Species are limited to where they can live by __.
Fill in the blank(s) with the appropriate word(s).