9/14 Warm Up

People depend on ocean organisms for __________________.

• minerals
• fuels
• food and water
• All of these choices

Minerals and nutrients from deep in the ocean are brought to the surface in cold water as a result of __________________.

• thermal pollution
• upwelling
• marine turbulence
• human activity

Fisheries renew themselves naturally each year, but __________________ has caused a shortage of fish in some areas.

• overfishing
• catch limits
• global warming
• aquaculture

Fuels such as ________________ are created naturally over the course of hundreds of millions of years from the remains of dead marine organisms.

• coal
• nuclear material
• oil and natural gas
• wood

Although some ocean pollution is the result of natural occurrences, most pollution is related to _______________.

• global warming
• human activities
• ozone depletion
• upwelling

___________________ from damaged tankers or drilling platforms can cause wide destruction to living things in the ocean.

• Propellors
• Sewage dumping
• Scrap metal
• Oil pollution

Which statement about ocean resources is true?

• Humans get very few resources from the ocean.

• Demand for the ocean's resources is increasing.

• The ocean is so big that we will never use up the resources.

• The ocean's resources have already been used up.

What is bycatch?

• catching fish with drift nets

• fish other than the targeted species, often thrown away

• fish that are processed on a fishing vessel

• animals other than fish that are caught in nets

Why is overfishing a problem?

• It reduces the fish population.

• It leaves the fish population as it is.

• It increases the fish population.

• It results in holding ponds.

All of the following are human impacts on the oceans: pollution, overfishing, bycatch, and decreased biodiversity.

• True

• False