Soil Worksheet-4
A. Fertilizers B. Pesticides C. Humus
A. Yellow B. White C. Black or brown
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A. Deserts and beaches
B. Hills and green fields
C. Any of these
A. Bedrock B. Subsoil C. Topsoil
A. Topsoil B. Subsoil C. Bedrock
A. Oxygen
B. Carbon dioxide
C. Nitrogen
A. Sandy soil B. Loamy soil C. Clayey soil
Answer Keys:
(1)–C; (2)–C; (3)–A; (4)–C; (5)–A; (6)–C; (7)–B