should be called Bilateral symmetry
I believe that the answer is D. lichens growing on cooled lava. Hope it helps.
I believe the answer is it can form polymers like carbs, lipids, proteins, and nucleic acids.
Trophic Levels describe the transfer and different stages of the organisms transferring energy. I just called it Trophic level energy flow in school.
A chemical reaction is a process by which atoms or groups of atoms in a particular substance are rearranged from the arrangement within the reactants to a new arrangement within the products.