I don’t know there’s no picture or anything I need more to answer
Answer:
refrain from using or disposing of (something); retain for future use.
Explanation:
DNA (or deoxyribonucleic acid) is the molecule that carries the genetic information in all cellular forms of life and some viruses. Source-
DNA, Genes and Chromosomes — University of Leicester
www2.le.ac.uk/projects/vgec/highereducation/topics/dna-genes-chromosomes
Answer:
They use them so that they can see what type of organisms live there.
Explanation: