Which of the following can be used to stimulate an organism’s immune system

What types of energy transfers and energy transportations are involved in the domino chain reaction?

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

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