场景阅读词汇词汇表

smoke fume petroleum deposit sediment ecosystem conversation conservation recycle contaminate erode upgrade degrade aggravate deteriorate devastate toxic pollution pollutant dioxide oxygen hydrogen nitrogen sulfur carbon photosynthesis phenomenon greenhouse layer ozone acid arid fertilizer fertile barren flooding famine drought glacier avalanche earthquake tidal tsunami typhoon tornado hurricane lava magma decompose accumulate release melt thaw dissolve absorb interact trigger plate drift flaw crack property gravity magnetic crust mantle core hydrosphere atmosphere