11.   The mussels consume microscopic plants, called phytoplankton, that are the basis of the aquatic food chain.

12.   The reduction in acid levels caused increases in the diversity of microscopic plants and other wildlife.

13.   These microscopic plants periodically leave thousands of fish flopping on the shore for lack of oxygen or floating dead on the water.

14.   Microscopic plants called phytoplankton feed on nitrogen and phosphorus in the river water, but when they die, they decompose and use up the oxygen in the Gulf.

15.   Researchers are also searching for microscopic plants and animals that could be attacking the fish or producing chemicals that are toxic to the fish.

16.   The term describes a condition which occurs when corals become stressed and expel the microscopic plants which give them their vibrant color.

17.   They are made up of polyps, tiny animals that live in colonies and feed at night on microscopic plants and creatures.

18.   This occurs when higher water temperatures heat up the coral, causing them to expel the microscopic plants that give them their vibrant color.