Natural Wonders

2. – Tiny plants and animals that float in water and are food for many sea creatures.
3. – To spread things out in different directions.
5. – Left unprotected or open to something, like light or danger.
6. – The layer of gases that surrounds a planet, like Earth.
9. – How often something happens in a certain time period, like sound waves or events.
11. – Easily affected or harmed by something.
13. – Any living thing, such as a plant, animal, or bacteria.
14. – A change that happens when two or more substances interact and form something new.

1. – The smallest unit of a compound that still has the properties of that compound.
4. – A special protein that speeds up chemical reactions in living things.
7. – The line where the Earth or sea seems to meet the sky.
8. – A series of actions or steps that lead to a result.
10. – A substance made of two or more different elements joined together.
12. – To send out light, heat, sound, or gas.