Geography test 3

3. An artificial structure designed to trap sand being moved by longshore drift, therefore protecting the beach.
6. sandy extension of beached formed by longshore drift currents.
7. the practice of grazing too many livestock for too long a period on land unable to recover its vegetation.
9. The upper layer of soil that contains most of the grounds nutrients.
15. Any change in climate over time whether due to natural processes or human activities.
16. Environmental change caused by humans either directly or indirectly.
18. are natural or artificial lakes for storing water
19. International treaty set rules for reducing emissions of greenhouse gases.
20. A structure placed parallel to the shoreline to separate the land area from the water
21. pollutants that are known or suspected to cause cancer or other serious health effects or adverse environmental effects
24. Heating of the atmosphere is above what is expected to occur by natural processes.
25. Form at the back of the beach and in the zones above high rise
26. the process by which vegetation in drylands decreases and eventually disappears.

1. A structure parallel to the shore and placed in a water depth of about 10 metres
2. the movement of sediments along a coast by waves that approach at an angle to the shore but then the swash recedes directly away from it.
4. where the land meets the sea
5. An artificial barrier constructed across a river to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply.
8. the act or practice of cultivating land to an excessive degree in the growing of crops so that soil quality is degraded and productivity is reduced.
10. the ability to be maintained at a certain rate or level.
11. A measure of human demand of the earth’s natural systems
12. Increased ability of the Earth’s atmosphere to trap heat. An observable rising trend in the Earth’s atmospheric temperatures, generally attributed to the enhanced greenhouse effect.
13. regenerate capacity of a biomes and ecosystems to supply ongoing resources, process wastes.
14. what nature provides for humanity
17. any land that people are capable of ploughing and using for crops.
22. area of land where water collects when it rains, usually bordered by hills. Water finds a way into streams and down into soil eventually feeding the river.
23. Buy the buildings and remove structures that are threatened by erosion.