Mitochondria and chloroplasts, organelles inside of eukaryotic cells, have their own membranes and genetic material. this is evidence of a. abiogenesis. b. horizontal gene transfer. c. coevolution. d. the endosymbiotic theory.

The model illustrates a process by which a substance is taken up by a cell

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective