Multiple choice

How much time is taken to form 1 cm of soil

  1. 10+ years

  2. 5 years

  3. 100s of year

  4. few months

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

Soil formation is an extremely slow process taking hundreds to thousands of years to create just 1 cm of fertile topsoil. This occurs through weathering of rock and accumulation of organic matter. The correct answer 100s of years is most accurate.