Greenpeace is an international group that is ____________ to saving the Earth.

The tiger is on the ____________ of extinction because most of its natural habitat has been destroyed by man.

A large part of the forest was destroyed when the trees were ____________ by the developers

Many wild animals that roam onto highways have ____________ with cars and died.

Although it is illegal to kill elephants, ____________ still continues because their tusks can be sold for a high price.

Garbage disposal ____________ in most of the poorer countries are not well designed and, therefore, they have polluted the surrounding areas as well.

Ships that dump toxic ____________ into the sea have killed both people and animals.

Conservationists are trying hard to prevent the animal population from ____________.

____________ occurs when soil, mud and rock flows down the land due to heavy rain.