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researchers believe that talking to plants may stimulate growth because of the carbon dioxide produced when people exhale as they speak. Since plants take in carbon dioxide, some scientists believe carbon dioxide could explain the benefit that speaking to plants seems to provide.

Explanation:

i dont understand the ;last question tho im sorry

the answer is a) cell division.

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in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.