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.
A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo
Intussusception. The condition is caused by an infolding of the small intestine, which often causes
Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T
Waterspouts are tornadoes that occur over warm-water bodies, instead of over land.
Tidal and wave power
Wave Basics