Across
- 2. Zone of life where organisms exist.
- 3. A methodical way to gain knowledge through evidence
- 6. Type of potential energy found in food molecules.
- 9. Earth’s water system including oceans, rivers, and glaciers
- 11. Science that focuses on matter, energy, and their interactions
- 12. Repeating sequences scientists try to understand in nature
- 14. Protective gas layer where weather occurs
- 17. Bacteria turn nitrogen gas into a usable form for plants in this process.
- 19. The process of converting atmospheric nitrogen into a usable form
- 22. A type of chemical reaction that gives off energy.
- 24. The main energy currency molecule used by cells
- 26. Yellow non-metallic element involved in acid rain formation
- 27. The minimum energy needed for a chemical reaction to begin.
- 28. Science that explores plants, animals, and microorganisms
- 29. The release of sulfur and nitrogen oxides can lead to this acidic form of precipitation.
- 30. Study of weather and atmospheric phenomena
- 31. A biological catalyst made of protein.
Down
- 1. Southeast Asian country vulnerable to typhoons and volcanoes
- 4. The law stating that energy is conserved.
- 5. A result of excess CO₂ trapping heat in Earth’s atmosphere
- 7. Discipline studying human behavior, culture, and society
- 8. Act of perceiving something using senses or instruments
- 10. All the chemical processes that happen inside a living thing.
- 13. The release of water from Earth’s surface into the atmosphere
- 15. What powers work in biological systems.
- 16. The Earth’s crust and upper mantle form this environmental layer
- 18. Loss of species that threatens biodiversity
- 20. Energy involved in movement or motion.
- 21. A scientific explanation tested and supported over time
- 23. Republic Act aimed at managing solid waste
- 25. Discipline studying human behavior, culture, and society