Across
- 2. a plant feeds on decomposing material.
- 6. a gas needed for photosynthses.
- 7. _______________ is a natural way of replention in plants.
Down
- 1. a plant pigment that absorbs light.
- 3. plants obtain nutrients from dead and decayed.
- 4. a natural way of replention.
- 5. algae grow in _____________________.