1 Some predict that the sun's rays will cause a sharp increase in deaths from skin cancer over the next fifty years

2 two oxyen atoms

3 oxygen molecules and ultraviolet radiation from the sun

4 it may cause the molecule to break apart into single atoms of oxygen 

5 viết lại câu cuối trong đoạn

1. What do people say about the rate of deaths from skin cancer in the future?
- Some predict that the sun’s rays will cause a sharp increase in deaths from skin cancer over the next fifty years.
2.  How many oxygen atoms are there in a molecule?
- Oxygen molecules make up about 21% of all gases in the Earth’s atmosphere
3. What elements participate in the formation process of ozone?
- Most ozone found in our atmosphere is formed by an interaction between oxygen molecules and ultraviolet radiation (UV) from the sun
4. What happens when an oxygen molecule and an ultraviolet radiation hit each other?
-  it may cause the molecule to break apart into single atoms of oxygen
5. What is the feature of single atoms?
- very reactive

II

1/ have

2/ order

3/ the

4 / make

5 / from

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