landscaping ornamental importance fruit pedicel leaves flowers shoot root stem plants botany economic importance prunus dulcis rosa indica flowering plant rosaceae rose family angiosperms sunrays sunlight formation of weather oceanic currents water currents wind circulation earth rotation weather formation classroom teaching material teacher students photography presentation ocean freshwater lake grassland species land biome lifepr aquatic biome tundra biome forest biome major biomes of the world major biomes biomes human resources human impact on weathering what are effects of weathering what are causes of weathering biological weathering chemical weathering physical weathering weathering
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