Freshwater
This is where a river or stream begins.
What is the waterhead?
These organisms produce much of Earth’s oxygen in marine ecosystems.
What are marine algae and phytoplankton?
These are areas where water covers the soil or is near the soil surface for part or all of the year.
What are wetlands?
Only about this percent of Earth’s water is freshwater.
What is 2.5%?
These tiny animals build coral reefs.
What are coral polyps?
These wetlands are dominated by grasses and non-woody plants.
What are marshes?
This river is the longest river in the world.
What is the Nile River?
This zone includes all open ocean water not near the bottom or intertidal zone.
What is the pelagic zone?
These wetlands are dominated by woody plants like trees and shrubs.
What are swamps?
This is the deepest lake in the world.
What is Lake Baikal?
This process happens when stressed corals turn white.
What is bleaching?
These ecosystems act as protective buffers and provide environmental services.
What are estuaries?
This Amazon animal can produce electricity.
What is the electric eel?
This deepest known point of the seabed is about 10,935 meters deep.
What is Challenger Deep?
This type of water forms when freshwater mixes with saltwater.
What is brackish water?