6.7 Ecosystems and Watersheds

(MUST ANSWER ALL TO BE CORRECT)

Algae, salmon, bacteria, snails, and moss are examples of __ in an ecosystem.

• biotic factors (plant or animal)

• abiotic factors

Which of the following are ABIOTIC factors?

(Identify ALL that are correct!)

• landforms

• geology

• fish

• weather

• topography

The living community and all nonliving factors that affect is called a/an __.

• estuary

• wetlands

• watershed

• ecosystem

What is the correct ORDER of the 4 VA majors rivers that drain into the Chesapeake Bay? (Starting with most northern river--one up near DC.)

• James, Potomac, Rappahannock, York

• York, Rappahannock, Potomac, York

• Potomac, Rappahannock, York, James

• Rappahannock, Potomac, James, York

Which MAJOR watershed does most of Virginia's waterways drain towards?

• Chesapeake Bay

• Mississippi River

• Gulf of Mexico

• North Carolina Sound

The MAJOR watershed located in the bottom right corner--where Virginia Beach is located and closest to Atlantic Ocean--is called __.

• North Carolina Sound

• Chesapeake Bay

• Mississippi River/Gulf of Mexico

What word describes the actions of smaller streams and rivers that feed into the main rivers in a watershed?

• tributaries

• ecosystem

• estuary

• wetlands

The area between dry lands and bodies of water that help filter pollutants, prevent flooding, and control erosion are called __.

• tributaries

• watershed

• wetlands

• estuary

Which of the following are roles of wetlands? (Select ALL that are CORRECT.)

• Filter pollutants

• prevent flooding

• control erosion

• harmful to the ecosystem

The largest estuary in the US is the __.

• Atlantic Ocean

• Chesapeake Bay

• James River

• Indian Ocean