Page 4 :
EXERCISE, SIl in the blanks with the correct words., need soil to grow. (Animals/Plants), soil is a mixture of sand, clay and humus. (Gravel/Lgam, are called farmers' friends. (Earthworms/Frogs), 1., on, 2., 3., The type of soil that holds water well is, (clay/sand), describes the layers of soil. (erosion/prgfle, 5. Soil., dead, A State whether the following statements are true (T) or false (F)., 1. Formation of soil is a slow process., 2 Humus helps the soil to hold more water., Aimals, 3. Gravel soil is preferred by farmers for growing plants., 4 Subsoil contains less air than topsoil., 5. Farming in hilly regions on a series of steps is called contour farming, Give two examples for each of the following., Ais, ata, 1 Components of soil, 2. Types of soil, Tobsail, Cutthy, 3. Layers of soil, oil, us., lled, 4. Causes of soil erosion, Answer the following questions briefly., 1 What is weathering?, 2. What are the different components of soil?, 3. What are the effects of soil erosion?, 4. What is crop rotation?, 5. What is terrace farming?, U Answer the following questions., I Describe the formation of soil., . Compare the four different types of soil., 135, 44744

Page 5 :
Topsoil, Subsoil, Bedrock