Aquatic Ecosystems Review

They are found only in freshwater

They support a wide variety of life

They are always warm

They have no plants

Most of the the water available on Earth is drinkable.

Most of the water available on earth is not drinkable

As temperature increases dissolved oxygen increases

As temperature decreases dissolved oxygen decreases

As temperature increases dissolved oxygen decreases

None of the above

Rainfall and evaporation

Temperature changes

Saltwater intrusion

Wind and glacial melting

Less than 4.3

4.5-4.6

4.7-4.8

4.9-5.0

use it as a food source

use it as a defense mechanism

use it to build shells and exoskeletons

use it to cool body temperatures

Because it's gross.

Some algae is bacteria.

Algae can use up all the oxygen and some produce toxins.

The algal bloom is just not pretty so it makes the water ugly.

They contain saltwater

They are found in deserts

They include rivers, lakes, and ponds

They have high salinity

Drinking water

Water purification

Flood mitigation

Treatment of human and industrial waste

Fish

Plankton

Algae

Insects

Lakes

Rivers

Oceans

Ponds

They are a major source of freshwater.

They provide unique recreational areas.

They act as natural water filters.

They are rich in mineral deposits.

1000m

6000m

10000m

10m

Intertidal Zone

Coastal Ocean

Open Ocean

Deep Sea

Waves

Currents

Air and sun exposure

Extreme temperature changes

Kelp forests and coral reefs

Deserts and tundras

Open ocean and deep sea

Freshwater lakes

Photic zone

Aphotic zone

Disphotic (twilight) zone

Benthic zone