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Across 3. You test this in the experiment 4. Draw a conclusion/opinion 5. Powerhouse of cell 8. Carbon dioxide + sunlight + water 9. When two more elements combined chemically 15. Made up of atom like atoms 17. Absorbs light for energy 18. Exact copy of DNA 19. Milk – sugar 20. Globular structure that helps make proteins 21. Microscopic plants

Down 1. Pesticides, stress, acid rain 2. Slight positive on one side of molecules and slightly negative on the other side/water 6. Composed of amino acids 7. Group of families 10. Gas required for animals/waste of plants 11. Testable statement 12. Grouping information and logical order 13. Oxygen allows us to produce energy 14. Diffusion of water 16. Proteins start/stop reaction 18. Genetic information 21. A