Science

1. controls and regulates the activities of the cell
3. knowledge and understanding of the natural and social world following a systematic methodology based on evidence
5. statement that describes an observable occurrence in nature that appears to always be true
7. all of space, and all the matter and energy that space contains
9. tiny particles that make up matter
11. dimensionless quantity representing the amount of matter in a particle or object
14. negatively charged subatomic particle that can be either bound to an atom or free
16. a symbiotic association between plant roots and fungi
17. the study of relationships which combines quantifiable data with scientific tools to observe, analyze, describe, and even predict outcomes of individual relationships
18. all living organisms
19. any living biological entity, such as an animal, plant, fungus, or bacterium
21. process in which elements are continuously cycled in various forms between different compartments of the environment
22. the measurement of how tightly a material is packed together
23. study of life

2. a chart or a graph that shows the intensity of light being emitted over a range of energies
4. observations that convey a value or unit
6. the basic unit of a chemical element
8. mixture of gases that surrounds the Earth
9. scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
10. the third planet from the Sun
12. a boundless, three-dimensional extent in which objects and events occur and have relative position and direction
13. explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts
15. energy generated by the Sun
18. a type of matter with specific properties that make it less rigid than a solid but more rigid than a gas
20. knowledge about safety related issues