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E&Change over time

QuestionAnswer
What do fossil evidence give us? they tell us evidence of change over time
fossil the solidified remains or imprints of once living organisma
the fossil record this is made up of all fossils discovered on Earth; a historical sequence of life
evolution when species change over time
vestigial structures remnence of once-useful structure examples: appendix, leg bones in whales,eyes of deep sea creatures
comparing organisms common ancestry-by comparing organisms we see examples of common ancestry examples: sketital structure
embryonic structures the embryos of mammals look very simmilar; this may be evidence that mammals share a common ancestor
Charles Darwin Darwin took a job on the HMS Beagle ship as a naturalist and concluded several theories and said that animals adapt to their environment ot survive on the Galapagos Islands
adaptation any traits or characteristics that helps an organisms survive
species a group of organisms that can reproduce viable offspring
Natural Selection the process in which organisms with favorable traits survive, reproduce, and pass on these favorable traits pass them on to the next generations
There are four things needed for Natural Selection. WHAT R THEY? 1. Overep:pop of organisms that produce a large number of ofspr 2. genetic var.: within the pop there are slight dif. 3. Struggles to Survive: within a pop there is pressure to survive 4. Sucessful Rep.: favorable traits are passed on to the next gen.
when does natural selection lead to evolution? when the entire species change over time b/c of their adaption
Created by: megbrody1
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