What is the importance of forest as a resource?</h2></div>

Which of the following is a method of solid waste disposal?

What is Global Warming? Write their main five reasons.</h2></div>

Radioactive substances can cause</h2></div>

At which dose is nuclear radiation considered lethal?

The atmospheric greenhouse effect is produced mainly by the:<span><br> </span></h2></div>

UV radiations cause</h2></div>

What happens if the forest area decreases rapidly ?<br> </h2></div>