Elements involve...

1

酸素
Oxygen (O2)
二酸化炭素
Carbon Dioxide (CO2)
日光
Sunlight
Water(H20)

2

窒素
Nitrogen (N)
リン
Phosphorous(P)
カリウム
Potassium (K)
硫黄
Sulphur (S)

3

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I feel sure that if there were not as many distractions yesterday we could have gotten a lot more do