I think it is A . eubacteria
The answer is C. Photosynthesis Reaction. Hopes this helps :D
<span>The building blocks for lipids are three fatty molecules and one glycerol molecule.They join to form a simple fat, or triglyceride. Proteins building blocks are amino acids. Amino acids are small molecules that contain carbon, hydrogen oxygen, and nitrogen atoms. Nucleic acids building blocks are nucleotides which are connected to form long chains,</span>
I thinks it is a NUTRIENT
Answer:
All of the above is the answer because they are all an important factor in the formation of a fossil.