Environmental problems: nuclear waste, climate change, air pollution, water pollution, soil contamination, deforestation, resource depletion (over-consumption), endangered species, Solutions: plan new trees, create concerve programmes, use public transprt, use solar energy, use wind energy, recycle, dispose of waste properly, turn off unused electrical appliances, put filters on factory chimneys,

排行榜

视觉风格

选项

切换模板

恢复自动保存: