The mystery beneath the crust – explain?
Describe the principal characteristics of environment?
Define environmental studies?
How many principal gases are there in the atmosphere ?
Discuss the sources of odour pollution?
What are the different hypotheses regarding the origin of the earth ?
What do you mean by noise pollution ?
Define water pollution?
What is the meaning of odour pollution ?
Explain with examples the natural changes of environment?
Define ecosystem?
Give a brief account of the components of environment.
What are the sources of water pollution ?
What are the uses of water ?
What is the meaning and objective of environmental education ?