Multiple choice

What is the key difference between renewable (R) and non-renewable (NR) resources?

  1. All NR resources pollute the environment; R resources don't

  2. NR resources exist in unlimited amounts; R resources don't

  3. NR resources must be refined before used by humans; R don't

  4. NR resources exist in limited amounts; R resources don't

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

The fundamental distinction between renewable and non-renewable resources is their availability and rate of replenishment. Non-renewable resources, like fossil fuels, exist in fixed, limited quantities that take millions of years to form, while renewable resources, like wind and solar energy, are naturally replenished on a human timescale and are virtually unlimited.