Question

Rajesh troop in 8th class visit birla planetoriom at Hyderabad they gained space science knowledge presents them field investigation report before the class

Answer 1

demand for water and, at the same time, causes much greater pollution of this essential element for life. The resultant interference in the natural cycle can often overwhelm natural processes of recovery, so that, in addition to products arising from the decomposition of natural substances (e.g., proteins, greases, carbohydrates) there