What happens when corals exceed their normal temperatures for too ...

[jazziefee]

What happens when corals exceed their normal temperatures for too long of a period of time?
  a. Coral polyps overheat and die
  b. Corals eject their zooxanthellae
  c. Corals break down their shells
  d. Corals increase their zooxanthallae

Question 2

What is a biodegradable pollutant?
  a. A pollutant that is organically based
  b. A pollutant that is able to be broken down into simpler compounds
  c. A pollutant that is natural
  d. A pollutant that does not alter the environment

[mk6555]

Answer to Question 1

ANS: B
If water returns to normal temperatures within a reasonable amount of time, the algal populations will
return. However, if the stress occurs for too long, the algae will be replaced by other species or
decomposers. These species will then take over the coral. Information can be found in the section
Organisms Cannot Prosper if Their Habitat Is Disturbed.

Answer to Question 2

ANS: B
Some pollutants can be removed from an environment through various biological activities. Some
marine organisms can metabolize these pollutants in to harmless ones. Information can be found in the
section Marine Pollutants May Be Natural or Human Generated.

[jazziefee]

Thank you!

[mk6555]

Always glad to help...