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Human systems 0

The structure of the human body

What is the structure of the living organism’s body ? The body of the living organism consists of a group of systems , Each system consists of a group of organs , Each organ...

Soil types 0

What are the properties of the soils ?

The properties of the soils The sand soil is well aerated soil that has low absorption of the water , The clay soil is poorly aerated soil that has highly absorption of the water...

Soil components 0

What are the components of the soil ?

The soil is a thin non-compacted superficial layer which covers  the Earth crust , And it is  a very important part of the environment , There are different types of the soil that are...