What's Your Soil IQ?

Got the dirt on soil? Let's see what you've got.

Created by IFDC
On Oct 16, 2015
1 / 5

How many major textural classes of soil are there?

2 / 5

Which of these soil types is (typically) best for growing crops?

3 / 5

True or False: There are more organisms in one teaspoon of soil than people on Earth.

4 / 5

How long can it take to develop 1 cm of topsoil?

5 / 5

How many tons of dry soil pass through an acre of earthworms in a year?

Questions left