Across
- 5. microscopic plants live in aquatic environments and perform photosynthesis
- 7. a substance that takes part in and is changed by a chemical reaction
- 8. a simple type of sugar that is an important energy source in living things ans which is part of many carbohydrates
- 10. any animal that eats only plants
- 13. an animal or a person that eats all types of food, especially both plants and meat
- 15. to change or make something change from one form to another
- 16. to move from one place to another, to move some thing or someone from one place to another
- 19. a thing produced during a natural, chemical, or industrial process
- 20. a chemical change produced by two or more substances acting on each other
- 21. heat, energy, etc. that is sent out in the form of rays
Down
- 1. the green substance in plants that absorbs light from the sun to help them grow
- 2. any animal that eats meat
- 3. the structure in plant cells the contains chlorophyll and in which photosynthesis takes place
- 4. physical substance in general that everything in the world consists of, not mind or spirit
- 6. a very small living thing that you can only see under a microscope
- 9. the process by which green plant turn carbon dioxide and water into food using energy obtained from light from the sun
- 11. a simple chemical substance that consist of atoms of only one type and cannot be split by chemical means into a simpler substance
- 12. a living thing that is able to make its own food using simple chemical substances such as carbon dioxide
- 14. the fact of a series of events being repeated many times always in the same order
- 17. a source of power, such as fuel, used for driving machines, providing heat, etc.
- 18. the way in which atoms are held together in a chemical compound
- 22. very simple plant with no real leaves, stems, or roots that grow in or near water, including seaweed