It true because in photosynthesis, you need celluos
2K + Cl₂ ⇒ 2KCl
2Ca + O₂ ⇒ 2CaO
Explanation:The five major branches of chemistry are organic, inorganic, analytical, physical, and biochemistry.
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Sub-branches of physical chemistry include:
Photochemistry — the study of the chemical changes caused by light.
Surface chemistry — the study of chemical reactions at surfaces of substances