Where do plants obtain the oxygen necessary to utilize foods?

Abanana plant produces rhizomes, which are involved in?

What is the correct trna sequence that would match the following mrna sequence.gcgaua

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