Across
- 2. water (the chemical symbol, as used in non-scientific contexts).
- 5. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
- 7. the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
- 8. a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis.
- 9. a thing or person that is the result of an action or process.
- 10. power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
Down
- 1. a plastid that contains chlorophyll and in which photosynthesis takes place.
- 3. is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
- 4. a substance that takes part in and undergoes change during a reaction.
- 6. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.