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 produce their own food are called what food chains?
Producers
A Polar bear lives in what ecosystem?
Tundra
Name two types of land ecosystems are there?
3 (Savannah, Rain forest, Desert, Tundra,)
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 whale is found in which ecosystem?
Aquatic - Marine
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
An elephant lives in which ecosystem?
Savannah
The type of ecosystem is most populated by animals?
Rain Forest
What is the difference between biotic and abiotoc components?
Biotic - Living Things
Abiotic - Non-living things
Name at least two fresh water bodies
a pond, a river, a lake
What is necessary to keep the ecosystems healthy?
A balance between biotic and abiotoc components