The following are sources of Earth's internal heat energy EXCEPT a. Decay of radioactive isotopes
b. Primordial heat
c. pressure from overlying layers
d. Sun’s energy

Which statement is true for all sexually reproducing plants and animals? the process of mitosis produces gametes.the process of mitosis always produces diploid cells.the process of meiosis produces gametes.the process of meiosis produces haploid cells.the process of meiosis produces diploid cells.