Question

1. Differentiate between physical and chemical weathering
2. Give two main characteristics of the following
3. What is soil fertility? How can we improve soil fertility?
Short answer que
(6) Loamy soll
(c) Clayey soll
(a) Sandy soil
4 How is humus formed?
5. How can we identify different types of soils?​

Answer 1

Answer:

Physical, or mechanical, weathering happens when rock is broken through the force of another substance on the rock such as ice, running water, wind, rapid heating/cooling, or plant growth. Chemical weathering occurs when reactions between rock and another substance dissolve the rock, causing parts of it to fall away.

Answer 2

Answer:

1. physical change only change the appearance of a substance not its chemical composition for example rusting of iron. chemical change causes a substance to change into an and substance with a new chemical formula for example burning of paper
2. (a) loamy soil is the mixture of clay sand and slit soil

• clay soil is a heavy soil type that benefit from light neutrients
• sandy soil is light ,warm, dry and tend to be acidic and low in nutrient

Explanation:

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