Question

1. ______ how long does it take currents to carry debris from the west coast of north america to the gyre?

a. about one year
b. about three years
c. about six years
d. about ten years

1. ______ a common estimate of the size of the garbage patch is:

a. 100,000 square miles (~260,000 square km)
b. 300,000 square miles (~800,000 square km)
c. 600,000 square miles (~1.6 million square km)
d. 1,000,000 square mi.(~2.6 million square km)

1. ______ what risks does the garbage patch pose for animals and humans?

a. fish and whales can confuse plastic as a food source
b. humans may consume fish that have consumed toxin - containing plastics
c. some animals can become trapped in plastic nets and rings
d. all of the above

1. ______ which countries have passed laws to ban or tax single - use plastic bags?

a. australia
b. china
c. the united kingdom
d. all of the above

Explanation:

Question 4

Ocean currents take about six years to carry debris from the west coast of North America to the gyre (Great Pacific Garbage Patch).

A common estimate for the size of the garbage patch (like the Great Pacific Garbage Patch) is around 1,000,000 square miles (or ~2.6 million square km).

The garbage patch poses risks: animals (fish, whales) mistake plastic for food, humans eat fish with toxic plastics, and animals get trapped in plastic. So all options are correct.

Answer:

C. About six years

Question 6