A plants require water for survival.
Water is a compound of hydrogen and oxygen.
A plant requires something that is a compound of hydrogen and oxygen for survival.
For survival, plants require a compound made of what?

1: carbon dioxide
2: Hydrogen and oxygen
3: organic molecules
4: deoxyribonucleic acid
5: carbohydrates
6: Converted sugar
7: genetic material
8: solid, liquid, gas