What PERCENTAGE of the world's water is SALTWATER?
97%!
What are PLANKTON?
They're creatures that FLOAT FREELY in the water - they can't swim.
What are NEKTON? Give TWO examples.
Large, active swimmers like fish, turtles, and whales.
What are BENTHOS? Give ONE example.
Organisms that live on the bottom of a body of water like oysters, worms, and lobsters.
Why are benthos mostly decomposers or scavengers?
Because they feed on particles/material that drift to the bottom.
Name TWO differences between SMALL, FAST moving water and LARGE, SLOW moving water.
small+fast= more oxygen; large+slow= less dependent on land for nutrients
Name the THREE ZONES in STANDING WATER ecosystems.
Shallow water, open water, and bottom water zones.
Tell us TWO THINGS about the intertidal zone.
Part of the sunlight zone, rocky or sandy. Crabs, clams, seaweed, etc. live there.
What is an estuary? How does it help an environment?
Where fresh and salt water meet. They bring in nutrients and flush out wastes.
