Unit 3.15 Summative Assessment Practice Env. Sc.

Which level of salinity matches with each aquatic biome?

• 30.0-35.0

• Freshwater

• 0.5-30 ppt

• Brackish

• 0-0.5 ppt

• Marine

The zone in the ocean where light reaches is called the ___ zone, whereas the aphotic zone is absent of all light.​ (a)  

• photic zone
• sunlight zone
• abyssial zone

The open ocean is called the ___ zone, whereas the ocean floor is called the ___ zone.

• pelagic, benthic

• photic, aphotic

• Benthic, photic

• aphotic, pelagic

What is the maximum age of most estuaries? (Give your answer using numbers, not letters or words.)

• 10,000 years

• 100,000 years

• 1 million years

• 1 billion years

Which type of wetland can be either salt or freshwater? (One word, singular, not plural)

• Marsh
• Swamp

• Bog

• Fen

Which of the following have standing water? Select all that apply.

• Bogs

• Rivers

• Creeks

• Marshes

• Swamps

Which of the following are NOT wetlands? Select all that apply.

• Marshes

• Bogs

• Creeks

• Streams

• Fens

Match the water quality measurement with what it tells us.

• How salty the water is

• Salinity

• How acidic or basic the water is

• Turbidity

• How clear or opaque the water is

• pH

What impacts are humans having on the marine biome? Select all that apply.

• the ocean is becoming more acidic

• the ocean is becoming more basic

• the sea level is falling

• the sea level is rising

Why are healthy oysters an excellent measure of water quality in an ecosystem? Select all that apply.

• They can only live in a certain range of salinity

• They only spawn when water is cool enough

• They need a certain amount of dissolved oxygen

• They can only grow in fairly neutral pH