Oceans
Microscopic aquatic organisms that perform photosynthesis
Phytoplankton
the rapid exchange of cold and warm-water regions within a lake
overturn
An estuary is an ecosystem where fresh water flows into what?
The ocean
Tributary
Beach
The layer of water that sunlight is able to penetrate
sunlit/euphotic zone
algae bloom
The constant flow of freshwater into the ocean stirs up ________________ that are used by plants and algae that grow in the area
Nutrients
Land along the banks of a river or stream
riparian zone
The part of the shore that is covered with water at high tide and uncovered at low tide
Inter-tidal zone
plants and animals that move with the ocean current
plankton
a lake that is too shallow to have an aphotic zone
pond
Salt levels in the water in the estuary are higher in the summer or the winter?
Summer
River ecosystems change as the ______________ of the river changes
speed
atoll
plants and animals that live on the ocean floor
benthos
Many lakes were formed by the movement of what during the Ice Age?
glaciers
Many animals in the estuary ecosystem are seasonal, migrating to other areas. True or false?
True
The ___________________ is the longest river in the world
Nile River
A coral reef attached to land
fringing reef
animals that move freely throughout the ocean
nekton
These lakes are so large they create their own weather system
The Great Lakes
Land that has water flowing into a particular river or body of water is called a ____________________.
watershed
The ________________ that are along the banks of the river contribute to the food supply for that river
trees and plants
Coral needs _________________ to produce its food
Algae