Unit 4: Soil And Soil Erosion

Question 1

Define Minerals

Answer 1

The inorganic chemicals found in rocks.

Question 2

Define Organic matter

Answer 2

Substances that contain
organic chemicals which contain atoms of carbon.

Question 3

Define Micro-organisms

Answer 3

The tiny
organisms in soil that help
to add plant and animal
remains into the soil in the
form of humus.

Question 4

Organism

Answer 4

Any living thing.
All plants and animals are
organisms.

Question 5

Define Biota

Answer 5

Living organisms,
like plants, animals,
insects, fungi and bacteria.

Question 6

Define Humus

Answer 6

The organic
material in soil. Humus is
made up of the remains of
plants and animals.