Page 225 - New Medley 5 Semester 2

Competencies
C-4.3, C-6.1

• Analysing
• Hands-on Learning
• Remembering
21st CENTURY SKILLS • Critical Thinking
• Creativity
4 Soil Erosion and Conservation
• Digital Integration

Warm Up • Analysing

Wind and water are the main agents of soil erosion. Can you
name the agent responsible for soil erosion shown in the picture?

SOIL

e soil forms the uppermost layer of the earth’s crust. It consists of ne rock

particles and the remains of dead plants and animals. It also contains air and
water in it.

Soil is very important for all living things. In fact, life on land is nurtured by

soil. It supports the growth of plants. We all are dependent on plants for our
basic needs like food, medicine, clothing and shelter. Many microorganisms like

bacteria, fungi, worms and insects live in soil.

Formation of Soil

Soil is formed by the weathering of rocks. Weathering is a very slow and gradual

natural process. During this process, large rocks are broken down into ne particles

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