How is the moon illuminated? A. It produces its own light.
B. It reflects light from the Sun.
C. It transforms energy into light.
D. It absorbs light from the Earth

According to the cladogram, which organisms have roundworms as a common ancestor?

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

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