Across
- 6. The build up of toxic chemicals inside organisms in a food chain.
- 7. Chemical reaction where glucose reacts with oxygen to release energy.
- 8. Chemical reaction used by microorganisms (to make bread.
Down
- 1. The process plants use to make their own food.
- 2. The number of plants or animals of the same type that live in the same area.
- 3. Chemical reaction which releases energy and takes place without oxygen.
- 4. The way in which living organisms depend on each other.
- 5. Molecule which produces energy, we get it from digested food.