How can the sun have both a brightness of -26.73 and 4.83? Explain what these numbers mean. help please

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

if you know your abc's you should be able to get your answer or just use google