7th Grade Ocean Pollution Quizzes , Questions & Answers

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Microplastics Biomagnification Quiz: From Ocean to Dinner Plate

This assessment explores the impact of microplastics on marine ecosystems and human health. It evaluates understanding of biomagnification, the process through which toxins accumulate in food chains, and the implications for...

Questions: 15 | Attempts: 25 | Last updated: Mar 20, 2026

Sample Question 1
What are microplastics?

Large plastic debris floating on the ocean surface

Plastic particles smaller than 5 millimeters found in aquatic environments

Biodegradable plastics used in food packaging

Tiny marine organisms that resemble plastic particles

Sample Question 2
Microplastics can absorb toxic chemical pollutants such as pesticides and industrial chemicals from surrounding ocean water.

True

False

Sample Question 3
What is biomagnification in the context of ocean pollution?

The process by which plastic particles grow larger as they absorb water

The increase in concentration of a pollutant at successively higher levels of a food chain

The physical breaking down of large plastics into microplastics by wave action

The spread of pollution from one ocean basin to another through currents

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