What do many deep water organisms use for feeding and the ...

[Mr3Hunna]

What do many deep water organisms use for feeding and the attraction of mates?
  a. Keen eyesight
  b. Bioluminescence
  c. Sense of smell
  d. Electrical impulses

Question 2

What determines the number and composition of the populations in a community?
  a. Food
  b. Light
  c. Space
  d. All of these choices

[momo1250]

Answer to Question 1

ANS: B
Many deep water organisms use patterns of bioluminescence for a variety of purposes. They can
attract prey while hiding their own shadow in the darkness. Also, there are organisms that flash
particular patterns in an effort to attract a mate. Information can be found in the section Examples of
Marine Communities.

Answer to Question 2

ANS: D
There is competition for food, light, and space in a community. The competition can be between
individuals in the same population or between different populations. Information can be found in the
section Communities Consist of Interacting Producers, Consumers, and Decomposers

[Mr3Hunna]

Thank you!

[momo1250]

Always glad to help...