Importance and Availability of Water
Identifying Components of Aquatic Environments
Main Types of Aquatic Organisms
Identifying Aquatic Ecosystems
Aquatic Pollution: Sources, Impact, and Prevention
100

The cycle that constantly supplies fresh water.

Water cycle

100

Feeding relationships in an ecosystem.

Food web

100

Warm-blooded, direct transfer for reproduction, covered in hair, and nursing their young are characteristics of:

Mammals

100

An area of land that is saturated with water for a long period of time. 

Wetland 

100

Used to measure water turbidity.

Secchi disc

200

This type of water covers the majority of Earth's surface.

Salt water

200

3 abiotic factors that can impact fish in an estuary.

Sunlight, dirt, oxygen, salinity, and temperature

200

Obtains food that is suspended in the water column by filtering. 

Filter feeders

200

Layers of water that separate into different temperature zones. 

Thermal stratification

200

The bioassessment of invertebrates that are present in a fresh body of water.

Macroinvertebrate sampling

300

This is the water that filters through sediments and rocks beneath the surface of the earth. 

Groundwater

300

Dense plant growth and depletion of oxygen are caused by this excess of nutrients in bodies of water.

Eutrophication

300

A living organism enclosed into two shells.

Bivalve

300

2 ways that aquatic environments are threatened. 

Destruction and loss of habitat, overexploited natural areas, water pollution, water flow modification, and invasion of foreign species

300

A source of pollution that is spread by rain or snow that is carried back to bodies of water. Not typically able to identify the source. 

Non-point pollution

400

This feature of water helps keep water temperatures more regulated when the temperatures outside change.  

Heat capacity

400

The symbiotic relationship between algae and fungi forms lichens that grow on rocks in freshwater ecosystems.

Mutualism

400

Immature stages of larger animals that are microscopic size and mostly lacking a backbone.

Zooplankton

400

The deepest part of a body of water that receives no sunlight.

Aphotic 

400

A solution to eutrophication, erosion, and disappearing habitats for small animals.

Riparian buffers

500

The angle found between hydrogen atoms in a water molecule helps contribute to its polarity. 

104.5 Degrees

500

5 standard aquatic species of fish for the Envirothon.

American Shad, Bluegill, Crappie, Largemouth Bass, and Brook Trout 

500

Form of reproduction that fertilizes internally, hatches externally, and uses a low amount of energy. 

Lecithotrophic

500

The youngest stage of a lake or pond. 

Oligotrophic 

500

Legislation that regulates what is being dumped into rivers and streams across the United States.

The Clean Water Act of 1972

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