Page 24 - Science Tour 3 (Workbook)
P. 24
6 Atmosphere
Match:
Match:
A B
1. The atmosphere a. 21% of the atmosphere.
2. Nitrogen represents b. is a mixture of gases.
3. Oxygen represents c. during photosynthesis.
4. Living things use nitrogen d. 78% of the atmosphere.
5. Plants use carbon dioxide e. to make protein.
6. Carbon dioxide helps keep f. Earth’s temperature suitable.
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