The rotting dead matter in the soil is known as _______.

Which factor(s) influences soil formation?

A dark soil is rich in ______.

________ soil is used to make pots, toys and statues.

Percolation rate of water is highest in the clayey soil and least in the sandy soil.

Soil is formed by _________ of rocks.

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This layer is soft, porous and can retain more water. It is called _______ or ______.

________ is hard to dig with a spade.

The relative amount of sand and clay depends upon the rock from which the particles were formed, that is the _____.

The mixture of ______ and ______ is called the soil.

The soil is classified on the basis of the proportion of particles of various sizes.

The _____ of the particles in a soil have very important influence on its properties.

Sandy soil is packed and is always wet.

Clayey soil is well-aerated and has large spaces between the soil particles.

Percolation rate is the rate in which the specific amount of water can be drained out by the soil in unit time.

Loamy soil is mixture of sand, clay and _________.

In a certain sample, it took 82 min for 820 ml to percolate into the soil. Find the percolation rate of the soil.

Water can easily drain through the spaces between the ________ particles.

A vertical section through the different layers of soil is called ______.