Across
- 5. A deciduous forest is a bio-me dominated by deciduous trees which lose their leaves seasonally.
- 7. the variety of life in the hard world or in a particular habitat or ecosystem.
- 8. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
- 12. (of electromagnetic radiation) having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves. Infrared radiation has a wavelength from about 800 nm to 1 mm, and is emitted particularly by heated objects.
- 14. physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
- 15. a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyritic ring.
Down
- 1. the arrangement of the natural and artificial physical features of an area.
- 2. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1.
- 3. structure and properties of matter"
- 4. the process or result of joining two more things together to form a single entity.
- 6. the strength and vitality required for sustained physical or mental activity.
- 9. energy radiant energy emitted by the sun
- 10. a vast, flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen.
- 11. the star around which the earth orbits.
- 13. the envelop of gases surrounding the earth or another planet.