Across

1. (TWO WORDS) A very large ocean wave caused by an earthquake or volcano.
4. To affect more and more people or things, e.g. Wildfires _____ when there's no rain for a long time.
5. People _____ when they don't have enough food.
6. When something is broken, e.g. during a storm.
13. A long period with no rain
14. A volcano does this.
15. A change which is caused by something, e.g. What are the _____s of global warming?
17. When something is completely broken so it can't be used again.
18. A violent storm with very strong winds
19. (Describing a storm) Very strong and causing a lot of damage
20. Plants that are grown for food. e.g. rice and potatoes.

Down

2. Very hot, liquid rock which comes out of volcanoes.
3. A person who studies the environment.
7. A sudden, violent movement of the ground
8. Happening slowly over a long time.
9. The weather is becoming more and more _____. You can't say how it will change in the future.
10. To make something change in a particular way, e.g. Climate change _____s the Earth in many ways.
11. (TWO WORDS) We live in this and breathe this.
12. Happening very quickly
16. When there is not enough food in a country
17. A very bad event which causes harm or death.