2. Scientists predict the sun will give us energy for at least how much longer? 300 years
five billion years
five million
fifty million

Name the types of burns one can get and which structures of the integument are damaged

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

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?