Aquatic Ecosystem

Hydroelectric plants impact which aquatic ecosystem?

• oceans

• wetlands

• ponds and lakes

• streams and rivers

________have a thin layer of water covering soil that is wet most of the time.

___________form where a stream or river flows into a body of salt water.

Destruction of exposes the coastline to flooding and storm damage.

• ocean

• estuaries

• wetlands

• ponds and lake

What distinguishes a pond from a lake?

• Lakes are deeper and larger.

• Lakes have a high density of nutrients and fish.

• Pond water is usually very low in nutrients.

• Sunlight reaches the bottom of most lakes, but not ponds.

Which are usually shallow and filled with an abundance of plant and animal life?

• Ponds

• Oceans

• Rivers

• Lakes

Which is NOT a freshwater ecosystem?

• oceans

• ponds

• rivers

• streams

What is eutrophication?

• increasing nutrients

• increasing salinity

• descreasing nutrients

• decreasing salinity

Important abiotic factors in aquatic ecosystems include temperature, sunlight, and ___________________gas dissolved in water.

Salinity is the amount of ___________dissolved in water.