Across
- 4. the natural environment of an animal or plant
- 6. a group of plants or animals that share similar characteristics
- 8. the relationship between the weight of a substance and its size
- 9. scientist who finds the periodic table
Down
- 1. a chemical element present in all animals and plants and in coal and oil
- 2. the process by which plants use energy from sunligh, carbon dioxide and water, and generate excess oxygen
- 3. a metallic element that burns very brightly, used to make fireworks
- 5. all the living things in an area and the way they affect each other and the environment
- 7. a part of a cell that is passed on from a parent to a child and that controls particular characteristics
- 9. A chemical in the cells of living things that contains genetic information