problem 1:

Critically illustrate out the term sustainable development.

problem 2:

How does acid rain form? prepare down its environmental impacts.

problem 3:

Illustrate out the term population explosion. prepare down its consequences.

problem 4:

prepare down the objectives and components of value education.

problem 5:

Illustrate in detail the benefits and predicaments of the constructing dams.

problem 6:

Illustrate out the renewable and non-renewable energy resources. Illustrate the merits and demerits of any two renewable energy resources.