In what form is does earth carbon come in ?

Characteristics and Properties

Carbon is found on Earth in the form of three different allotropes including amorphous, graphite, and diamond. Allotropes are materials made from the same element, but their atoms fit together differently.

Explanation:

not sure if this is what you'r looking for eubacteria and archaebacteria

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.