In a food chain, which are
the most efficient users of
solar energy: herbivores, carnivores, omnivores or parasites?

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

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 coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america