PS Watersheds

Which type of wetland is formed near the mouth of rivers and contains tall grasses for migratory birds?

• Bog
• Marsh
• Cypress Swamp
• Bottomland hardwood swamp

What is the area where fresh water from a river mixes with salt water of the ocean?

• Swamp
• Salt River
• Delta
• Estuary

Wetlands help control flooding by

• absorbing runoff from heavy rains
• collecting water behind dams
• providing natural water filtration
• quickly releasing water

What do we call the land area that supplies water to a river system?

• runoff
• recharge
• watershed
• valley

Plants that live in the wetland

• are adapted to dry conditions.
• are adapted to being always under water.
• are adapted to getting water from the air.
• are adapted to thrive in wet conditions.

Wetlands are important because...

• they help filter water of toxins and excess nutrients
• they support many species
• they protect areas from floods 
• all of these choices

Which of the following is an effect of excess fertilizer washing into streams and lakes?

• the pH is too low for plants and animals
• cooler water holds more oxygen
• increased sediment reduces oxygen
• algae "blooms", leading to lower oxygen

Which of the following is an effect of excess fertilizer washing into streams and lakes?

• the pH is too low for plants and animals
• cooler water holds more oxygen
• increased sediment reduces oxygen
• algae "blooms", leading to lower oxygen

How could pesticides get into lakes and streams?

• too much could be used
• it could be sprayed too close to a stream
• rain could wash pesticides into a stream
• all of the above

A ridge of land that separates one watershed from another 

• bank
• cliff
• divide
• partition