When lions prey on a herd of antelope some of the antelope are eliminated which part of the theory of evolution can be used to describe this situation?

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added