In freshwater ecosystems, the water contains little to no ____.
Salt
This is a large system of animals, plants, and organisms that live together.
an ecosystem
Which land ecosystem is treeless and is home to polar bears and penguins?
tundra
Do water ecosystems or land ecosystems take up most of the earth's surface?
Water Ecosystems
Organisms that form the bottom of most food chains in aquatic ecosystems
Plankton
How many types of forest ecosystems are there?
3 (Rain forest, coniferous, deciduous)
The shore where the ocean meets land
Beaches
The Nile and Amazon are the longest of these in the world.
Rivers
a tall land formation that has a variety of ecosystems depending on the altitude
a mountain
A bat sleeps in what ecosystem?
a cave
Do ocean ecosystems contain freshwater or salt water?
Salt water
Freshwater that is flowing
a river
An area in the desert watered by a spring
an oasis
Where does a whale live?
in the ocean
The type of forest that loses it's leaves in the Autumn.
Deciduous Forest
Where freshwater flows into the ocean
Estuary
a shallow lake
a pond
formation built from exoskeletons of coral polyps
coral reefs