Environmental Science

4. The release of animals from captivity where they are provided with post-release support such as food.
8. A measure of the reflectivity of a surface
10. Embankments that absorb and deflect noise, especially around mines, airports and major roads.
11. The process of creating habitats that are similar to the conditions present before the natural habitat was changed by human actions.
13. Winds that blow around the north and south poles in a circular manner which reduce the mixing of polar air masses with the rest of the atmosphere.

1. An organism that thrives in conditions with a high salt concentration.
2. Geological processes that change the form of a rock with heat and/or pressure, but without melting it.
3. The 3D shape of the land surface.
5. One of the first species to colonise an area at the start of ecological succession.
6. A habitat that links other habitats so that animals can move between them.
7. A wetland area with an accumulation of dead plant material, especially moss.
9. A large geographical region with particular climatic features, in which a characteristic, unique community of species lives eg Taiga, coral reefs, temperate grasslands, tundra, tropical rainforest
12. The industrial process that combines nitrogen from air with hydrogen from natural gas to produce ammonia.