Multiple choice

Which human activity creates the least threat to global stability?

  1. overuse of resources

  2. pollution of water with heavy metals

  3. pollution of air with sulfur gases

  4. reuse of plastic bags

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Reusing plastic bags reduces waste and the demand for new plastic production, which is a minor but positive action compared to the other destructive options listed.