Across
- 4. the chemical and physical processes by which a living thing uses food for energy and growth
- 6. acid fluid secreted by the stomach glands and active in promoting digestion
- 7. an organ of the body that produces hormones
- 8. a group of connected cells in an animal or plant
- 10. the set of nerves inside the spine that connect the brain to other nerves in the body
Down
- 1. organs in the chest with which people and animals breathe
- 2. the smallest basic unit of a plant or animal
- 3. pair of small organs in the body that remove waste matter from the blood and produce urine
- 5. soft tissue containing a lot of fat in the centre of a bone
- 9. a set of animals or plants, members of which have similar characteristics to each other