Which pair of substances is transported in the phloem? A. amino acids and protein
B. amino acids and sucrose
C. protain and starch
D. starch and sucrose

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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 is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.