An organism that grows best at low water activity is a .

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

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.