Marine Environments

The water in an estuary would best be described as what?

• Saltwater with high salinity

• Freshwater

• Brackish

• Free of plankton

Which of the following is a life zone that is NON-photosynthetic?

• Neritic

• Benthic

• Intertidal

• Aphotic

Organisms that live on the seafloor inhabit which zone?

• Neritic

• Benthic

• Intertidal

• Epipelagic

Why is the salinity level constantly changing in an estuary?

• salt is continually added to the watershed in the form of acid rain

• the salt water from the ocean and fresh water from the watershed are constantly mixing

• estuaries evaporate at an unusually fast rate leaving more salt behind, but then the rains come and dilute the water

• because they are so high up in the watershed, near the mountain ranges

What percentage of the ocean's sea life lives in coral reefs?

• 10 -15%

• 20%

• 45%

• 25%

Coral reefs are endangered by

• climate change

• overfishing

• pollution

• all of the above

Tags

NGSS.HS-LS2-6

Coral reef is an animal

• false
• true

Coral reefs are found all over the oceans.

• true
• false

What type of water does coral prefer?

• Warm
• Cold

Species living in the Intertidal Zone must be able to survive which changes?

• Moisture

• Temperature

• Salinity

• All of the above

Tags

NGSS.MS-LS1-5