1.
Which one of the following is not a threat to environment?
2.
Who interact with the environment and modify it according to their needs?
3.
When is the World Environment Day celebrated every year?
4.
Which one of the fallowing animals is called the ship of the desert?
5.
What do plant and animal kingdom make together?
6.
The domain of water is referred to
7.
Which one of the following is created by nature?
8.
Which one of the following is a basic life support system?