What contributes to the high biological activity and surface ...

[sammy]

What contributes to the high biological activity and surface nutrients in southern polar waters?
  a. Deep-water upwelling
  b. Weak stratification
  c. There is a lack of continental margins
  d. All are contributing factors

Question 2

Why does the ocean not boil or freeze solid in different regions of the world?
  a. The latent heat of fusion and vaporization balance the heat energy inputs and outputs.
  b. Heat is able to be transferred to water vapor.
  c. Heat is transported by oceanic and atmospheric circulation.
  d. The thermal inertia of water is low in certain regions

[trog]

Answer to Question 1

ANS: D
There are a few factors that culminate in southern polar waters to produce a high biologically active
area. There is an absence of continental margin which allows the Antarctic Circumpolar Current to
minimize salinity differences. Turbulence and weak stratification encourages deep-water upwelling
events. Information can be found in the section The Ocean Is Stratified by Density.

Answer to Question 2

ANS: C
Heat is transferred from the tropics to the poles via ocean and atmospheric currents. This allows the
ocean to remain in liquid state, not boiling or freezing at various regions. Information can be found in
the section Surface Water Moderates Global Temperature

[sammy]

Excellent

[xiazhe]

Gracias!