Across
- 1. – the upper layer of the earth where plants grow.
- 4. – a liquid needed by living things for survival.
- 7. – the framework of bones in the human body.
- 8. – the study of living things, matter, energy, and the environment.
- 10. – hard structures in the mouth used for chewing food.
- 13. – the mixture of gases around the earth.
- 15. – a force that opposes movement between two surfaces.
- 16. – the sense organ used for smelling and breathing.
- 18. – an object that attracts iron and some other metals.
Down
- 2. – the parts of a plant that make food.
- 3. – the reproductive parts of flowering plants.
- 5. – the ability to do work.
- 6. – the organ in the mouth used for tasting.
- 7. – the part of a plant that supports leaves, flowers, and fruits.
- 8. – the parts of a plant that can grow into new plants.
- 9. – the organ that controls body activities and thinking.
- 11. – the sense organs used for hearing.
- 12. – the outer covering of the human body.
- 14. – the part of a plant that absorbs water and mineral salts from the soil.
- 17. – the sense organs used for seeing.