Across
- 5. the process when waste products are produced
- 6. The Structural Unit of a living thing
- 7. the process when the plant grows towards the sun
- 8. the process when the root of the plant grows towards the ground
Down
- 1. living organisms with one cell
- 2. a group of similar things that can reproduce among themselves
- 3. living things that make their own food
- 4. living things that depend on other living things for food