推荐回答(3个)
低碳生活,从我做起
曾经,地球母亲留给我们丰富的能源使我们沾沾自喜,感叹地球上的能源取之不尽,用之不竭。可十九世纪以来,人们不断加快着工业化和城市化的步伐,我们生存的地球环境日趋恶化,冰川开始融化,沙尘暴年复一年,极端天气频繁出现,珍稀物种日益减少。法国大作家雨果早以告诫过我们:“大自然是善良的慈母,同时也是冷酷的屠夫。”千里之堤溃于蚁穴,人类只有一个地球,生态链的任何一环断裂都会带来不可逆转的灾难。
地球妈妈痛苦地呻吟着。烦躁的她这儿一挥手落一阵雪,就变成了冰天雪地,去年南方的雪灾,今年新疆的雪灾牵连了无数同胞的心呀;她那儿吹口气,暴雨倾盆而下,淹没了多少农田和建筑,泥石流让树木大片大片地消失。全球正在变暖,南极和北极的冰川像被火烤了一样,流着泪融化着。我甚至看到北极熊坐在一块小小的冰上蜷缩成一团,手撑一把小黄伞,样子十分可怜。 “厄尔尼诺”现象让我们的地球妈妈承受着巨大的痛苦。
所以为了保护我们的家园,我们必须踊跃加入环保行列,号召更多的人们行动起来,积极实践低碳生活,从节电、节气,节水,合理利用和回收等点滴出发,所谓的低碳生活就是指在生活作息时所耗用能量尽量减少,从而降低碳,特别是二氧化碳的排放。其实要做到低碳生活很简单,下面是我的“低碳”建议:
●及时关电脑
统计数据显示,家庭中75%的用电都耗在使电视、电脑和音响等保持待机状态上。平均一台台式电脑每天耗电60至250瓦。如果一台电脑每天使用4小时,其他时间关闭,那么每年能节省约500元人民币,且能减少83%的二氧化碳排放量。
●多乘公交车
交通产生的二氧化碳占温室气体排放量30%以上,减少此类排放量的最好办法之一是:乘坐公交车。美国公共交通联合会称,公共交通每年节省近53亿升天然气,这意味着能减少150万吨二氧化碳排放量。
●打开一扇窗
我们每年人均排放约25吨二氧化碳,怎样减少这个数字?有一些简单有效的方法:打开一扇窗户,取代室内空调;夏天使用空调时,温度稍微调高几度。数据统计表明,只要所有人把空调调高一度,全国每年能省下33亿度电。
●自备购物袋
每年全球要消耗超过5000亿个塑料袋,其中只有不到3%可回收。塑料袋都由聚乙烯制成,掩埋后需上千年时间实现生物递降分解,期间还要产生有害的温室气体。下次去杂货店的时候,别忘记自备购物袋。
●种一棵树
谈到全球变暖,如果你不了解复杂的碳捕捉(CCS)技术,那也不必慌张。事实上“捕捉”二氧化碳的能手就是树木本身。要是你嫌自己种树太麻烦的话,至少可以捐钱给环保组织,让他们代劳。
亲爱的同学们,积沙成塔,集腋成裘。功在当代,利在千秋。涓涓细流可汇成滔滔江海。片片绿叶能造就莽莽林海。为了我们美丽的地球家园,为了留给后人的绿水青山,碧海蓝天。让我们一起走进低碳,开始环保新生活,为共创绿色家园而努力吧!
第五届地球小博士试题(初中组)答案
1C 2C 3A 4B 5A 6A 7 A 8B 9D 10 C 11D 12A 13 D 14C 15C 16B 17B 18C 19 C 20 C 21B 22B 23C 24A 25A 26D 27A 28C 29 A 30C 31A 32 C 33C 34A 35D 36D 37C 38C 39B 40D
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