BSN 1-4

1. The process of evaluating knowledge, skills, or understanding through questions or activities.
5. A type of biogeochemical cycle where the main reservoir is found in the atmosphere.
7. The study of the geographic distribution of plants, animals, and other organisms.
13. The branch of science that studies people, society, and human behavior.
18. A type of environment that includes landforms, climate, water, and natural resources.
19. The study of living organisms, including plants, animals, and microorganisms.
21. A harmful algal bloom that can poison marine animals and affect humans.
24. The branch of science that studies the natural world and its processes.
25. A movement that promotes the protection and conservation of the environment.
27. The layer of gases that surrounds the Earth and supports life.
29. Any form of water, such as rain or snow, that falls from the atmosphere.
30. A type of environment that includes human beliefs, traditions, and practices.

2. A type of cycle in which materials are mainly stored in rocks and soil.
3. The study of interactions among different species living in one area.
4. An element that is essential for life and is found in all living organisms.
6. The study of matter, energy, motion, and the forces of nature.
8. The process in which plants release water vapor through their leaves.
9. The branch of science that studies the Earth, its materials, and its processes.
10. A community of living organisms interacting with their physical environment.
11. The rigid outer layer of the Earth made up of rocks and soil.
12. The part of Earth where all living organisms exist and interact.
14. The part of Earth that includes all forms of water on the planet.
15. The process of removing salt from seawater to produce fresh water.
16. The preserved remains or traces of organisms that lived millions of years ago.
17. The study of how living organisms interact with one another and their environment.
20. A gas in the atmosphere that is important for plant growth and protein production.
22. A condition in which people do not have enough resources to meet their basic needs.
23. Water that flows over the ground into rivers, lakes, or oceans after rainfall.
26. Refers to the nonliving factors that affect organisms in an ecosystem.
28. A systematic way of learning about the natural world through observation and experiments.