The 3rd Law because the action of the climber pulling on a rope causes a reaction that makes their body go up/lift up.:)
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
It was the plants around us. They give us air to breath. It was to help us breath so we can live.