Is the Earth in Danger?

The police are still trying to establish the ... of the fire.

She died of natural ... .

Jack left without giving a ... .

That was the ... for telling her the truth.

I knew Sam was going - that was the ... I went there.

Is there any particular ... why he does not want to come?

A situation in which there is not enough food for a great number of people, causing illness and death, or a particular period when this happens is a ... .

A large amount of water covering an area that is usually dry is a ... .

An extremely large wave caused by a violent movement of the earth under the sea is a(n) ... .

A fire burning in an area of land with many trees, that is difficult to control and sometimes spreads quickly is a ... .

A large amount of ice, snow and rock falling quickly down the side of a mountain is a(n) ...

A sudden violent movement of the earth's surface, sometimes causing great damage is a(n)...