Step 1: Understanding plastic pollution.
Plastic products like bottles and bags are widely used but are not biodegradable, meaning they do not break down naturally in the environment. This results in long-term environmental pollution.
Step 2: Analyzing the options.
- (A) they are not durable: This is incorrect. Plastic is actually durable, which is part of the problem because it takes years to degrade.
- (B) they are non-biodegradable: Correct. Plastics do not degrade naturally and accumulate in landfills and oceans, causing significant environmental harm.
- (C) they are made of toxic materials: While some plastics can contain toxic chemicals, the primary concern is their non-biodegradability.
- (D) they react with atmospheric gases: Plastics may react with some chemicals, but this is not the main reason they should be reduced.
Step 3: Conclusion.
The correct answer is (B) they are non-biodegradable, which makes plastics harmful to the environment in the long term.