An estuary is best defined as a place where--

• fresh and salt water meet

• a river meets the Chesapeake Bay

• a group of animals are gathered

• the water from the land flows into a river

A watershed is defined as--

• water that is in the Chesapeake Bay

• land that drains water into a particular set of rivers

• land that is surrounded by water

• the place that fresh and salt water meet

Which of the following is NOT TRUE of estuaries?

• Estuaries provide a habitat for biotic factors

• Estuaries create a protective refuge for living things

• Estuaries allow juvenile animals to grow into adults safetly

• Estuaries create shelter for aquatic and non-aquatic life.

Where is the largest estuary in the 48 contiguous United States?

• Great Lakes

• Gulf of Mexico

• Chesapeake Bay

• off the coast of Flordia

the area of the river that is located near the mouth is

• upstream

• brackish

• downstream

factors that are non-living things such as climate that affect an ecosystem

• biotic

• salinity

• sources

• abiotic

Bay, lagoon, harbor, inlet, and sound are other names for

• wetlands

• lakes

• bogs

• estuaries

factors that are living things that affect an ecosystem

• biotic

• abiotic

• organic

• brackish

the most polluted part of the river because pollutants flow this direction

• source

• mouth

• upstream

• middle

Drainage area of a river.

• River basin
• Groundwater
• Estuary
• Watershed