Across
- 2. gas produced by burning carbon and organic compounds and by respiration.
- 6. organism that eats other plants or animals for energy and nutrients.
- 9. the process in which green plants use sunlight to make their own food.
- 11. gained through absorption in consumers.
- 12. a colourless, transparent, odourless liquid that is the basis of the fluids of living organisms.
- 13. any kind of green plant.
- 15. the upper layer of earth in which plants grow.
- 16. rays from the sun that provide energy for plants.
Down
- 1. a green pigment which is responsible for the absorption of light to provide energy for photosynthesis.
- 3. plant or animal material used as fuel to produce electricity or heat, plants produce this through photosynthesis.
- 4. total rate at which material is produced and net primary production.
- 5. organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
- 7. areas where all living creatures (plants & animals) interact with non-living things.
- 8. graphical representation, showing the flow of energy at each trophic level in an ecosystem.
- 10. animals whose primary food source is plant-based.
- 14. the chemical element of atomic number 8 and the life-supporting component of the air.
- 17. gained by consumers in energy or biomass per unit area per unit time remaining after allowing for respiratory losses.
