What factor allows for the carbon present in sediments to ...

[yoroshambo]

What factor allows for the carbon present in sediments to re-enter back into atmospheric and oceanic
  cycles?
  a. Geological uplift
  b. Acid rain
  c. Sediments dissolving
  d. All of these choices

Question 2

Why does oil not dissolve in water?
  a. It has covalent bonds connecting the atoms.
  b. It is found within tissues of organisms.
  c. It is not a polar molecule.
  d. It has ionic bonds

[s.meritte]

Answer to Question 1

ANS: D
Geological uplift can expose carbonate rock to chemical reactions with oxygen. Acid rain on limestone
rock can release carbon dioxide. Lastly, sediments can also dissolve which would release the carbon
dioxide that is stored in it. Information can be found in the section Gases Dissolve in Seawater.

Answer to Question 2

ANS: C
Oil molecules are nonpolar. Nonpolar molecules are not attracted to water molecules so the bond
strength found in oil is not diminished as it is with polar molecules. Information can be found in the
section Water Is a Powerful Solvent.

[yoroshambo]

Thanks for the timely response, appreciate it

[xiazhe]

Excellent