How many types of aquatic biomes are there?

What is one way humans destroy marine habitats?

What is the main cause of the current mass extinction?

Temperature, sunlight, dissolved oxygen and nutrients are all

A species used to measure habitat health is called a what?

What river zone supports the greatest number of both plant and animal species?

What does lotic mean?

What does lentic mean?

The land area that delivers sediment and dissolved substances to a stream or river is called a

Salt water covers about how much of the earths surface?

The Oceans are important for regulating global temperature and climate.

Wetlands are important because they filter water, protect shorelines from erosion and provide feeding and breeding grounds for many organisms.

_____ _____ are among the oldest and most productive ecosystems in the world, but grow only ½ centimeter per year.

The overall amount of water on the Earth stays about the same.

What is the origin of energy the drives the water cycle?

Large areas of groundwater found in underground rock formations are called

The largest aquifer in the United States is the

Name a prion disease from the Zombie article.

A person with CIP (congenital insensitivity to pain) does not feel any