Abiotic factor
The non-living parts of an
ecosystem – dirt and water
Biotic factor
The living parts of an
ecosystem – plants and
animals
Divide
An area that
separates one
watershed
from another
Ecosystem
A working unit made
up of living and nonliving things
Estuary
An area where freshwater
mixes with salt water
Pollution
Anything that has a
negative effect on the
environment
Tributary
A river or stream that
feeds into a larger river or
stream.
Watershed
An area of land that
drains into a specific
body of water
Wetland
An area where water
covers the soil for all or
part of the year
Water quality
Measures how clean the
water is
Fill in the “Estimated Percent” column.
All percents should add up to 100%.
Location
Oceans
Glaciers and
icecaps
Surface water
Ground water
Atmosphere
Estimated
Percent
Actual Percent
Water Source
Actual
Percent
Surface water – lakes,
rivers,
ponds, streams, creeks
0.38%
Ground water – well-water,
0.61%
water
below Earth’s surface
Atmosphere – clouds
vapor
and water
0.01%
Water Source
Oceans – salt
Frozen water
Actual
Percent
water
97%
2%