Which of these is most likely to cause some form of mutation? A. drinking purified water from a big city's water supply
B. smoking cigarettes
C. growing old
D. eating large amounts of high-fat foods

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons