HDSO WATER QUALITY D

This, determines the direction and speed of the water flow of a river or stream?

• headwater

• distance

• slope

• sediment

 Where are eutrophic lakes usually found?

• lower altitudes

• higher altitudes

The major freshwater ecosystems include:

• ponds, lakes, streams, oceans, and wetlands

• ponds, lakes, streams, rivers, and wetlands

• seas, lakes, ponds, wetlands, rivers, and streams

• oceans, seas, lakes, rivers, streams, and wetlands

What is the name for the beginning source of a river or stream?

• mouth

• slope

• headwater

• sediment

The water in this zone of a lake or pond is shallow enough for light to reach the bottom?

• Littoral Zone

• Limnetic Zone

• Profundal Zone

These are freefloating autotrophs and heterotrophs that live in freshwater or marine ecosystems.

What percent of Earth’s freshwater is found in lakes, ponds, rivers, streams, and wetlands?

• 2.5

• 68.9

• 30.8

• 0.3

During these seasons, as the water at or near the surface of the lake or pond cools, turn over occurs.

• winter and summer

• fall and spring

• fall and summer

• spring and winter

Many producers, such as aquatic plants and algae, live in these shallow waters.

• Littoral Zones

• Limnetic Zones

• Profundal Zones

 Plants and animals in freshwater ecosystems are adapted to the low content of this in freshwater.