Which is an effect of short-term environment changes

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria