flowering plants: 150mya

first land plants: before 600mya

first algae: 1.6 bya

multicellular organisms

ATP (energy)

DNA and RNA (genetic codes)

Machinery for transcribing DNA to RNA

C12 is 99% of the type of carbon in plants

C13 is mostly other 1% along with a little of C14

Isotopes indicate presence of photosynthesis

Early life relied on chemosynthesis

Modern biology relies on photosynthesis

Earliest organisms did not use oxygen in metabolism

Energy from inorganic minerals were used for metabolism