57
Answer the following questions :
1- Why is the biology of the continental shelf waters richer and more
abundant than that of the open ocean and deep-sea bottom ?
2- How does wave activity indirectly control the feeding behaviour
of the benthos on the floor of the continental shelf ?
3- Why do plankton and nekton tend to have patchy distribution s in
the contienntal shelf ?
4- Biologists maintain that all food webs ultimately depend on
primay production , How can this be true for communities on the
deep sea bottom , where , because of perpetual darkness , there is
no primary production ?