Human Activities Impacting Ocean Systems

Human Activities Impacting Ocean Systems

Multiple Choice

People depend on the oceans for __________________.

• Natural resources

• Food and water

• Transportation

• All of the above.

Multiple Choice

Coral reefs are endangered by

• climate change

• overfishing

• pollution

• all of the above

Multiple Choice

Refer to the photo, taken from the Maldives (Indian ocean). This is evidence that corals:

• Generate tourist revenue

• Are not very important

• Are keystone species

• Create breakwaters

Multiple Choice

Why do algae blooms happen?

• there are too many nutrients in the water

• there are too many fish in the water

• there is not enough turbidity in the water

• all of these options

Multiple Choice

phosphate can get into water because of what substances causing water pollution?

• cleaning products

• fertilizer

• sewage

• all of these options

Multiple Choice

What is "overfishing"?

• Fishing out of season

• Catching fish faster than they can replenish

• Catching fish from the top of the food chain

• Catching more fish than what people eat

Multiple Choice

What is one negative impact of net fishing?

• it is easier

• a lot of unwanted fish are caught and die

• they can catch a lot of fish at one time

• the nets come in pretty colors