Why do plants make their own food? (I tried googling it and all I could find was how they make it, not necessarily why)

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Where can dna be found in a prokaryotic cell

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass