Question

Assertion (A): Oil spill leads to the death of millions of fish.

Reason (R): The oil spill on the seawater acts as an insulating layer between air and water.

Options

• Both A and R are true, and R is the correct reason for A.

• Both A and R are true, but R is not the correct reason for А.

• A is true, and R is false.

• A is false, and R is true.

Answer 1

Both A and R are true, and R is the correct reason for A.

Explanation:

Oil spreading over seawater forms a surface film that blocks the transfer of oxygen from the air into the water, causing dissolved‑oxygen depletion that can kill large numbers of fish and other marine life; oil also coats and poisons animals, worsening the mortality.