What do the pyramids reveal about the differences between the island groups' reef
ecosystems?

1. is geographic distribution

2 is increasing complexity

3 is transitional forms

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.