Across
- 4. the process of taking in food by an organism and its utilization by the body.
- 5. plants that live on dead and decaying plants and animals.
- 6. food occurs in the presence of sunlight.
Down
- 1. leaves take in carbon dioxide from the air through tiny pores .
- 2. plant that can not prepare their own food.
- 3. green plants make food themselves from simple substances.