Science 1 Marks Question

It is a mixture of sand, soil and silt. And also contain humus.

The factors that help us to determine the various types of vegetation and crops that might grow in any region are type of climate and component of soil.

The term shimmering means that the air shines with a slightly shaking light.

The rotting dead matter in the soil is called humus.

Minimize use of chemical fertilizers, use manures in place of that Industrial waste should be treated before release Avoid use polythene and plastics.

The rotting dead matter in soil is called humus.

ErosionErosion.

Clayey soil absorbs more water but allows less water to percolate.

Weathering is a natural process by which huge rock is broken down into tiny particles but at a very slow rate.

Clayey soil.

Soil is the habitat for many living organisms, like bacteria, fungi, protozoan and earthworms as it contains large amounts of nutrients. Therefore top soil is called the habitat of many living organisms.

Soil erosion is mainly caused by rain, wind, flooding, overgrazing, and deforestation. Erosion of soil is more severe in areas of little or no surface vegetation, such as desert or bare lands.

Soil pollution.