Question

Assertion (A): Eighty per cent of marine pollution comes from land.

Reason (R): Mining for materials such as copper and gold is a major source of contamination in the ocean.

Options

• Both A and R are true, and R is one of the reasons for A.

• Both A and Rare true, but R does not explain A.

• A is true, but R is false.

• A is false, but R is true.

Answer 1

Both A and R are true, and R is one of the reasons for A.

Explanation:

Around 80% of marine pollution comes from land-based activities, including agricultural runoff, industrial discharges, and untreated sewage. Mining for materials like copper and gold is a major source of contamination, as it releases harmful chemicals like heavy metals into the environment. These pollutants eventually reach the oceans, explaining why land-based sources are the primary contributors to marine pollution.