Ecology Exam

3. Process that moves weathered sediments from one location to another
7. How fast weathering occurs depends on the _____of an area.
8. Physical weathering caused by the action of freezing water
12. Soil is a mixture of weathered rock and decayed ______matter.
14. Any weathering process that breaks up rock without changing its chemical composition.
17. The dropping of eroded sediments
18. Any weathering process in which water, air, or other substances react with the minerals in the rock and change the chemical composition of the rock.
21. A ______is a moving mass of snow and ice that moves downhill and forms when more snow and ice accumulates than melt.
22. The _______happened because of drought and poor soil management.

1. The following can cause physical weathering:_____, animals, and wind.
2. A __________glacier is a giant ice sheet that spreads out from a center of accumulation; while an alpine glacier starts in a mountain and moves into a valley.
4. The _______ was a cold period marked by episodes of extensive glaciation alternating with episodes of relative warmth.
5. The three main nutrients that restore soil fertility and make it better are_______, Phosphorus, and Potassium.
6. When carbon dioxide and water combine chemically
9. Physical weathering caused by roots.
10. _______are piles of weathered glacial rock.
11. Multiple, straight, parallel lines which represent the movement of the sediment loaded base of a glacier and are called glacial______.
13. The darker the soil color, the more _____the soil is for planting.
15. Process in which minerals are dissolved in water & carried downward
16. Material deposited by water, ice, or wind is called_______.
19. A _______is a man made pile of stones, usually conical, and often marks the path of an alpine trail.
20. Decaying and decomposing organic material is known as_____.
23. Beneath soil layers is_____.