Difficult Earth Support System Terms. 0.0 / 5 ? GeographyWeather systemsA2/A-levelOCR Created by: DoRevision123Created on: 10-05-18 14:16 38571012469 Across 1. Tiny photosynthesising marine organisms in the surface waters of the oceans. (13) 4. Excessive grazing of land by livestock which destroys or degrades pasture and is not sustainable. (11) 5. A cloud formed by convection with a rounded-top, lumpy appearance and flat base. (10) 9. Rainfall that runs off the ground surface either because the soil is saturated or the intensity of rainfall exceeds the soil’s infiltration capacity. (8, 4) 10. Clouds lying in a level sheet. (10) Down 2. Proportion of sunlight reflected from a surface. (6) 3. The near surface layer in a periglacial environment which seasonally freezes and thaws. (6, 5) 6. The movement of water across the land surface. (3, 3) 7. The thin envelope of gases (mainly nitrogen and oxygen) that surrounds the Earth. (10) 8. A high altitude, feather-like cloud made of ice crystals. (6)
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