Quiz on Microplastics

What size are microplastics defined as?

• Smaller than 10 millimeters

• Smaller than 5 millimeters

• Smaller than 1 millimeter

• Smaller than 0.1 millimeters

What percentage of tap water samples worldwide contain microplastics?

• 50%

• 60%

• 70%

• 80%

Where have microplastics been found in the human body?

• Bloodstream, lungs, and placentas

• Liver, kidneys, and heart

• Brain, muscles, and bones

• Skin, hair, and nails

How much plastic does the average human consume weekly?

• 1 gram

• 3 grams

• 5 grams

• 7 grams

What are primary microplastics?

• Plastics that are larger than 5 millimeters

• Plastics that are manufactured small

• Plastics that break down from larger waste

• Plastics found in the ocean

Which country contributes over 35% of the plastic waste that leaks into the ocean?

• Malaysia

• Indonesia

• Philippines

• Thailand

What is the main source of inhaled microplastic fibers?

• Industrial emissions

• Household dust and clothing

• Vehicle exhaust

• Agricultural activities

What is the estimated amount of plastic waste produced by humans annually?

• 100 million tonnes

• 200 million tonnes

• 300 million tonnes

• 400 million tonnes

How do microplastics critically impact marine ecosystems?

• They primarily affect the aesthetic value of marine environments.

• Their impact on deep-sea ecosystems is negligible due to low concentrations.

• They cause severe consequences for marine life.

• They can increase the turbidity of the water, which benefits some filter feeders.

To what extent has the Basel Convention been effective in regulating plastic waste exports?

• It has eliminated plastic waste exports.

• It has made it harder for wealthier nations to export certain categories of plastic waste.

• Its effectiveness is debated, with some evidence suggesting minimal impact due to non-compliance and the complexity of tracking plastic waste.

• The overall volume of plastic waste generated globally has continued to rise, potentially offsetting some of its impact on export figures.