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Across 1. materials and energy sources found in nature that humans need to survive 6. a testable idea that attempts to explain a phenomena or answer a scientific question 9. oil, coal, nature gas 11. information collected using scientific methods 14. a branch of philosophy that involves the study of behavior: good and bad, right and wrong 16. the application of ethical standards to relationships between human and their environment 21. the study of how the natural world works 22. naturally replenished or renewed over short periods 23. a statement of what a scientist expects to observe if a hypothesis is true 24. the variable that changes in response (effect) to the conditions set in an experiment

Down 2. describes a human-centered view of our relationship with the environment 3. a study in which only one factor is manipulated or changed 4. view that gives value to all living things 5. expresses the environmental effects of an individual or population in terms of the total amount of land and water required 7. a used resource that can continue at the same rate into the foreseeable future 8. a social movement dedicated to protecting the natural world from undesirable changes 10. a view that judges actions in terms of their benefit or harm to the integrity of whole ecological systems 12. includes all the living and nonliving things with which organisms interact 13. a preference or viewpoint that is personal, not scientific 15. naturally formed much more slowly than are used 17. the variable that is manipulated or changed in an experiment 18. when other scientist examine a submitted scientific manuscript 19. broad explanation that applies to a wide range of situations and observations 20. the ensemble of knowledge, beliefs, values, and learned ways of life shared by a group of people