Environmental Science

3. A layer of soil in which the water is permanently frozen, often trapping bubbles of gases such as methane.
4. The magnetic field around Earth which deflects charged particles travelling from the Sun.
6. The action of removing trees, resulting in a reduction in forest area.
10. The name given to events when the wind and ocean currents in the equatorial Pacific Ocean slow significantly or reverse
11. The control of pests using living organisms, usually predators or pathogens.
12. An organism that produces high-energy food substances using sunlight in photosynthesis.
14. factors Physical factors such as light, temperature and water.
15. Reducing the population of a species by selective killing.
16. These are wild plant varieties or species that are closely related to domesticated crops.

1. Frozen (water) part of the planet
2. Any process which removes carbon dioxide from the atmosphere, such as afforestation
5. Incoming Solar Radiation
7. A measure of the reflectivity of a surface.
8. A gas that absorbs infra-red radiation emitted by the Earth’s surface and causes atmospheric heating.
9. A measure of the variety and abundance of wildlife species.
11. The study of living organisms so the knowledge gained can be applied to engineering or other technological developments.
13. The place where an organism, species or population lives.