Abacteria culture begins with 13 bacteria that triple in amount at the end of every hour. how many bacteria exist in the culture at the end of the 10th hour?
a. 13,312
b. 26,624
c. 767,637
d. 2,302,911

What element does susan b. anthony include in this passage to strengthen her argument?

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

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