Answer to Question 1ANS: C
Desiccation is the drying out of an organism. Motile animals can move towards water, but sessile
organisms must await the return of water. They trap water within their shells to keep their gills moist.
Some have a protective mucous which prevents water loss. Information can be found in the section
Examples of Marine Communities.
Answer to Question 2ANS: C
The Arctic does not have a deep scattering layer. Perhaps this is due to the abundance of nutrients in
the deep water and the waters above. Information can be found in the section Examples of Marine
Communities.
Some organisms used as models in genetic research
Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg
There may become a driveability issue because the gasoline direct-injection injector is exposed to ...
Four cutaneous receptors that occur in human skin.
The first generation of model organisms in genetic analysis
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is