Across
- 3. A relatively small body that revolves around a bigger body.
- 6. A push or a pull acting on an object.
- 8. Growing plants for food, clothing and and other useful products.
- 10. Membrane bounded bodies that have definite shape and functions.
Down
- 1. Plastics that can be reheated and remolded.
- 2. Microorganisms that cause diseases.
- 4. The process of removing weeds.
- 5. The number of oscillations in a second.
- 7. Compounds formed when a metal replaces hydrogen in acids.
- 9. Atoms or groups of atoms with a positive or negative charge.