Question

multiple select question
select all that apply
the great pacific garbage patch ______. more than one answer may be correct.
□ is driven by a vast circulating ocean current known as a gyre
□ is composed mostly of materials disposed improperly or accidentally on land
□ is a pile of garbage that has settled on the ocean floor
□ has captured 100 million tons of plastic debris

Explanation:

1. The Great Pacific Garbage Patch is driven by ocean gyres (large circulating ocean currents), so the first option is correct.
2. It is composed of improperly or accidentally disposed materials (mostly plastic) from land and ocean, so the third option is correct.
3. It is not a pile on the ocean floor (it's in the water column, mostly floating), so the second option is incorrect.
4. Estimates of its plastic debris are in the millions of tons but not exactly 100 million tons in a captured way (and the phrasing is inaccurate), so the fourth option is incorrect.

Answer:

• is driven by a vast circulating ocean current known as a gyre
• is composed mostly of materials disposed improperly or accidentally on land