General Science

3. An organism that makes its own food using energy from the sun or other sources
5. An organism that obtains its food by feeding on other organisms or organic matter
6. The study of Earth's physical structure, its history, the processes acting on it, and the rocks of which it is composed
8. The variable of part of an experiment to which all others will be compared
11. A close living situation between 2 species where at least one of the species benefits
15. An explanation of the natural world that has been thoroughly tested and is supported by a significant amount of evidence
16. The study of life's history as revealed in the remains of once-living organisms
17. The branch of science that deals with the physical universe beyond Earth's atmosphere
19. The study of weather
20. The speed of an object in a given direction
21. The systematic study of the natural world through observation and experimentation in order to formulate general laws

1. The rate at which an object moves
2. The study of past human life as revealed by preserved relics
4. A description of a natural phenomenon or principle that is supported by a significant amount of evidence and often includes mathematical terms
7. A community of organisms that interact with each other and their physical environment
9. The preserved remains of a once-living organism
10. The production of visible light by living organisms
12. The study of living organisms
13. The process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food
14. Organisms that obtain their nourishment from dead organisms
18. The smallest unit of life in creation