you know the difference between a Saltwater Ecosystem and a Fresh water
Ecosystem? How are
they the same?
How are they different?
Let's read to find out!
your organizer and print.
Water or Salt Water?
Water covers more than 70 percent of the Earth's surface. Oceans
and seas contain salt water and are called salt water
ecosystems. The oceans are the Earth's largest ecosystems.
Fresh water is water that has very little salt in it. Lakes,
rivers, ponds, streams and marshes are freshwater ecosystems.
There are many different saltwater
ecosystems because the saltwater is not the same everywhere. Ocean
water that is near the shore or at the surface is often warmer
than deep water in the ocean. Many plants and animals live
in this warm shallow water. In the deeper parts of the
ocean, the water is much colder and there is very little
sunlight. This part of the ocean has very little plant life
and very few fish.
Like the saltwater
ecosystem, not all freshwater ecosystems are the same.
Rivers and streams have moving water. How fast the water moves
determines what can survive in the water. Many plants and animals
live in rivers and streams. The water in lakes and ponds is
still. Lakes are usually deeper and the water temperature
depends on how deep the lake is.
the ocean most animals and plants live in the shallow water.
Fewer plants and animals live near the bottom of a lake because it
is too deep for sunlight to reach the bottom.
Key Venn Diagram
Oswego City School District
Elementary Test Prep