Answer:
Pb has an atomic mass of 82. If an atom of that element has an atomic mass of 80, that atom is known as: an isotope.
Its ready to begin prophase
Answer:
B. Cellular Respiration
Explanation:
Because u have to think which one does the samething as photosynthesis
Mutation. this happens when a cell copies its DNA to divide. its more common than you may think, a "typo" occurs every 100, 000 or so nucleotides, thats about 120, 000 "typos" every time a cell divides.
