Study of chemical composition of elements in human body.

Study of chemical composition of elements in human body.

Degraded lands: Land, as viewed here, is a composite of the various elements of the Earth's physical, biological, and chemical systems which directly or indirectly affect human wellbeing.  Degraded land, consequently, is that in which significant cha

is one of the largest companies located in the Egyptian market since 1991, working in the field of feltilizers, chemicals, raw materials, pesticides and seeds, as well as human drugs and medical supplies.