Rosalind Franklin contributed to the understanding of DNA by discovering It's shape and structure.
The exterior temperature increases steadily. (Apex) ^-^
I'm not sure but it might be C
The change in the environment affected how the organism would evolve to be so that it could survive. the term for that is survival of the fittest, and only the fittest would be able to survive the conditions of its surrounding environment. hope this answered your question. :)