Deoxyribonucleic acid (DNA) contains the genetic instructions for the development and function of living things. The main purpose of DNA in a cell is long term storage of information.
Sedimentary rocks are formed by cementation and compaction. This happens when sediment particles are compressed and fused together over very long periods of time.
I would say B because large beaks are used to crack seeds.
Its like a system of cells working together to create cells like a molecule or something