B. Fill in the blanks:
1. Red soil gets its colour from
2. The most fertile soil used for cultivation is
3. Bricks made from laterite soil are used as
4. The natural fertilisers formed from dead leaves and plants are known as
5. Removal of top layer of soil is called
Answers
Answer:
1. iron
2. alluvial soil
3. building houses
4. humus / manure
5. soil erosion
Explanation:
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Answer:
1) The red color might be mainly due to ferric oxides occurring as thin coatings on the soil particles while the iron oxide occurs as hematite or as hydrous ferric oxide, the color is red and when it occurs in the hydrate form as limonite the soil gets a yellow color.
2) loamy soils
3) He named it laterite from the Latin word later, which means a brick; this highly compacted and cemented soil can easily be cut into brick-shaped blocks for building. The word laterite has been used for variably cemented, sesquioxide-rich soil horizons.
4) You can indeed use decaying plants and table scraps to make a type of fertilizer, but with some limitations. The process of encouraging bacteria to decay the organic matter is called composting.
5) Topsoil is the uppermost layer of the Earth's surface layers. Top soil is soft and light and can be carried away easily. Water and wind cause the topsoil to be removed. This process of carrying of top soil by wind and water is called as soil erosion.
Explanation: