What are the causes of environmental change ?
The mystery beneath the crust – explain?
Define environmental studies?
What are the measures to control odour pollution ?
How many principal gases are there in the atmosphere ?
What is the meaning and objective of environmental education ?
Define water pollution?
What are the different hypotheses regarding the origin of the earth ?
Explain with examples the natural changes of environment?
Discuss the sources of odour pollution?
Describe the principal characteristics of environment?
What is environment ?
What are the ways to conserve forest ?
What do you mean by environmental change ?