1. refers to a change over time 2. is the father of evolution 3. is considered as father of laxonomy 4. Thomas Malthus believed that populations grow geometrically while resources slowly increase leading to 5. proposed the theory of use and disuse. 6. explains the difference in survival of individual and reproduce in a particular environment 7. Gene flow is the movement of from one population to another 8. occurs when there is a change in the genetic makeup caused by environmental stressors.