Soil

Question 1

What is the Importance of soil? Mention 3.

Answer 1

Supports plant growth, essential for agriculture, stores and filters water, provides a habitat, helps reduce climate change, supports human structures, non-renewable resource

Question 2

Soil composition

Answer 2

Weathered parent rock.
Water.
Air.
Living Organisms.
Decaying organic matter.

Question 3

What is HUMUS?

Answer 3

It is decaying material that makes soil fertile and rich.

Question 4

Soil Profile

Answer 4

Grass.
Dead Leaves.
Soil Layer.
Parent Rock

Question 5

Physical causes of soil erosion?

Answer 5

Rain and Wind

Question 6

Human causes of soil erosion? Mention 3.

Answer 6

Deforestation, up and down ploughing, overgrazing, soil exhaustion, collapsed rubble walls, urbanization, habitat destruction

Question 7

Soil conservation methods
Mention 3.

Answer 7

Afforestation, contour ploughing, crop rotation, controlled grazing, terraced fields, rubble walls, drip and sprinkler irrigation.