The answer is : Limestone
Answer:
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
Im not too sure what the answers you have are but cotton swab and put it in a bag if you write your own
C. Because ecosystems consist more of animals
I need more information to answer this question.
