Plzz Help

Which statement is true of flatworms and humans, but not of ferns?

(A) Their cells contain DNA.

(B) They are eukaryotic.

(D) They are heterotrophic.

(C) They are multicellular.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

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

What advantages does a pedigree have over a written passage?