| A | B |
|---|
| observation | use of senses to gather and record information about processes and structures in nature |
| qualitative | descriptions |
| quantitative | measurements |
| inference | logical conclusion based on observation |
| adaptation | inherited characteristic that improves an organism's ability to survive and reproduce in their environment |
| evolution | generation-to-generation chance in the inherited genes in a population that accounts for all of the changes that have transformed life over time |
| vaccination | dose of disabled or destroyed pathogen used to stimulate long-term defense against the pathogen |
| element | pure substance that cannot be broken down into other substances by chemical or physical means |
| atom | the smallest particle of an element |
| compound | substance containing two or more elements chemically combined in a fixed ratio |
| proton | subatomic particle with a positive charge |
| neutron | subatomic particle that has no charge (neutral |
| electron | subatomic particle with a negative charge |
| isotope | one of several forms of an element, each containing the same number of protons in their atoms but a different number of neutrons |
