on and around earth, all of the following reflect incoming sunlight except
a) desert sands.
b) polar ice sheets.
c) heavy cloud cover.
d) atmospheric carbon dioxide.

Here the anwer is C.

Explanation:

When a heavy cloud cover is dense, it doesn´t only attenuate sunlight, but it can also absorb the light of sun.

C.

Heavy cloud cover.

"the importance of the japanese economy and security is far greater than that of the asian values"

answer; the cats meowing will temporarily increase, but then it will decrease;