Clouds appear white because the cloud droplets scatter all the visible wavelengths of sunlight about equally. This is largely due to the ____ of the cloud droplets
A) composition
B) concentration
C) size
D) shape
C
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A device to make crossing borders easier, especially for workers, within the European Union is the formation of ___________________________.
Fill in the blank(s) with the appropriate word(s).
Briefly explain why a region that is tectonically active may be particularly vulnerable to mass wasting
The growth in the use of natural gas relied on
A. the reduction in the supply of coal provide incentive to produce more gas. B. OPEC. C. the use of pipelines to distribute the gas. D. None of the statements is correct.
Which factors contribute to sea-level rise from global warming?
a. melting of arctic ocean ice and heating and expansion of sea water b. increased precipitation and cooling of sea water c. increased rainfall over land and decreased rainfall over the oceans d. melting land ice and heating and expansion of sea water e. melting of arctic ocean ice and cooling of sea water