Pls HELP ASAP 9th grade work

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Which of the following will a bacterium produce when a human gene is added to its genome? question 4 options: human carbohydrates a protein made up of both human and bacterial properties the human protein coded for by the human gene human plasmids that can be isolated from the bacterium