Better control of weeds and reduced soil erosion can result from planting crops that are genetically engineered to resist which of these?

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.

What do all of the above organisms have in common