Please help me I really need it.

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above