Algal blooms do not discolor water

Thermal stratification in lakes help to improve water quality

Hypolimnetic aeration is recommended for shallow tropical lakes

If groundwater is contaminated it will not affect lakes and streams

The process by which plants lose water through small openings in leaves

Surface runoff occurs when the precipitation rate is _____ the infiltration rate

Which of the following is by far the leading cause of water pollution?

Which of the following is a nonpoint source of water pollution?

To determine the presence and concentration of water pollutants, scientists are least likely to use

Freshwater systems are mostly threatened by

Estuaries and coastal wetlands are important for all of the following reasons except

Most of the wetlands that are lost are used for

A polymictic lake is one which:

Organisms which are predominantly found living on, in or near bed sediments of rivers or lakes are known as:

Of the following organisms, the group that is least likely to cause disease is

A good indicator used in water quality is the number of

Which water quality indicator can be determined by measuring how light travels through water?

Which process would most likely increase the dissolved oxygen level in a freshwater lake?

After analyzing data collected from a lake, there is a significant decrease in dissolved oxygen. What most likely caused the decline?