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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

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

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