What are the two key concepts for this section? Define biological evolution (evolution) and natural selection and explain how they are related. What is the scientific theory of biological evolution...

What are the two key concepts for this section? Define biological evolution (evolution) and natural selection and explain how they are related. What is the scientific theory of biological evolution through natural selection? What are fossils and how do scientists use them to understand evolution? What is a mutation and what role do mutations play in evolution through natural selection? What is genetic variability? What is an adaptation, or adaptive trait? Explain how harmful bacteria can become genetically resistant to antibiotics. What three genetic adaptations have helped humans to become such a dominant species? What is an evolutionary tree or phylogenetic tree? How does it help describe evolution? What are two limitations on evolution through natural selection? What are five common myths about evolution through natural selection?