Biology

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HJLNH3FRBK GREENHOUSE CYAHAFKNDR CO22ZFVAOI CGNITTOROF AIRHUMANWS HCEWATERW2 3QOENEGYXO FBTGRLA3FY DWUTJTDOOF
1.
tree
2.
leaf
3.
oxygen
4.
air
5.
wood
6.
rotting
7.
greenhouse
8.
CO2
9.
NH3
10.
water
11.
human
12.
fire
13.
food