Question

what is the main cause of plastic pollution in the ocean?
chemical runoff from factories
oil spills
animals dropping plastic into the ocean
trash entering the ocean from land

1. choose the correct answer.

about how much of the trash in the ocean comes from land?
20%
80%
100%
60%

1. choose the correct answer.

microplastics are ____.
miniature plastic bags
tiny pieces of broken - down plastic
microscopic sea creatures

Explanation:

Question 1: What is the main cause of plastic pollution in the ocean?

• Chemical runoff from factories is more about chemical pollution, not primarily plastic.
• Oil spills involve oil, not plastic.
• Animals don't drop plastic into the ocean as a main cause.
• Trash entering the ocean from land (via litter, improper waste disposal, etc.) is the main source of plastic pollution in oceans.

Scientifically, around 80% of ocean trash originates from land - based sources (runoff, litter, etc.). 20% is too low, 100% is extreme, 60% is not the accepted estimate.

• Miniature plastic bags are not the definition of microplastics.
• Microplastics are tiny pieces of plastic that have broken down (from larger plastic items or are microbeads, etc.).
• They are not sea creatures.

Answer:

D. trash entering the ocean from land (assuming the options are labeled A - D with D being this option; if labels are different, adjust, but the content is "trash entering the ocean from land")

Question 2: About how much of the trash in the ocean comes from land?