Review for 2023 Marine and Pollution Test

fertilizer runoff could be categorized as

• chemical pollution

• nutrient pollution

• sediment pollution

• thermal pollution

The location in which freshwater and saltwater mix at the mouth of a river is known as a(n)

• intertidal zone
• productivity zone
• euphotic zone
• estuary

The portion of the ocean where sunlight is able to penetrate the water is known as

• intertidal zone
• productivity zone
• euphotic zone
• estuary

Which of the following describes a marine environment with HIGH PRODUCTIVITY?

• at the mouth of a river, with plenty of nutrient flow, and plenty of sunlight
• in the open ocean
• deep in the ocean below the euphotic zone
• small phytoplankton populations

POP's stands for Persistent Organic Pollutants. These are chemicals that...

• block sunlight from marine environments

• do no easily break down in the environment

• remove dissolved oxygen from the environment

• increases the temperature of the environment

Which trophic level would be most susceptible to biomagnification of POPs?

• producers
• primary consumers
• secondary consumers
• tertiary consumers

Plastic pollution is a problem because plastic may break into smaller pieces but is NOT BIODEGRADABLE. In this context, BIODEGRADABLE means...

• broken down by living organisms
• produced during photosynthesis
• accumulated in the ocean
• produced by chemical plants

Saltwater biomes have around _____% salinity, while freshwater biomes have around .1%.

• 3
• 13
• 30
• 50

The amount of saltwater on the earth’s surface is vastly larger than the amount of freshwater.

• True
• False

How can you help our oceans?

• support efforts for marine conservation
• say no to single use plastic
• reduce how much waste you produce
• all of the above