Which identifies the main purpose of biological taxonomy?

i'd say that the moon rock is about 2.2 billion years old.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

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.