七年级生物下册4.14.2保护生物圈是全人类的共同义务知识梳理(新版)北师大版.doc

上传人:testyield361 文档编号:1080505 上传时间:2019-04-07 格式:DOC 页数:1 大小:1.02MB
下载 相关 举报
七年级生物下册4.14.2保护生物圈是全人类的共同义务知识梳理(新版)北师大版.doc_第1页
第1页 / 共1页
亲,该文档总共1页,全部预览完了,如果喜欢就下载吧!
资源描述

1保护生物圈是全人类的共同义务 一、知识结构1、雨水的 PH值小于 5.6即为酸雨。温室效应的形成与二氧化碳气体有关。2、世界环境日是 6月 5日;世界地球日是 4月 22日,国际禁毒日是 6 月 26日,世界无烟日是 5月 31日。3、实践证明,建立自然保护区和实施大型生态工程是恢复和改建生态环境的重大有效措。4、生物圈是人类赖于生存的唯一家园,生物圈保护的中心目标,在于保持各种生态环境的健康,维持人类和其他生物的生存环境可持续发展,改善人类的生活质量。5、对生态环境质量的调查、评价、监测和预测,是保护生物圈的前提;如我们用地衣和苔藓做为指示植物监测二氧化硫;如果舟澡和小颤澡大量繁殖则说明水体严重污染。

展开阅读全文
相关资源
猜你喜欢
  • DIN ISO 7331-2011 Ski-poles for alpine skiing - Requirements and test methods (ISO 7331 2011)《对高山滑雪用滑雪杖的要求和试验方法(ISO 7331-2011)》.pdf DIN ISO 7331-2011 Ski-poles for alpine skiing - Requirements and test methods (ISO 7331 2011)《对高山滑雪用滑雪杖的要求和试验方法(ISO 7331-2011)》.pdf
  • DIN ISO 7364-1985 Shipbuilding and marine structures deck machinery accommodation ladder winches identical with ISO 7364 edition 1983《造船海上结构 甲板机械 舷梯绞车》.pdf DIN ISO 7364-1985 Shipbuilding and marine structures deck machinery accommodation ladder winches identical with ISO 7364 edition 1983《造船海上结构 甲板机械 舷梯绞车》.pdf
  • DIN ISO 7368-1994 Hydraulic fluid power two-port slip-in cartridge valves cavities identical with ISO 7368 1989《液压流体动力 两通口筒形插入阀 阀腔》.pdf DIN ISO 7368-1994 Hydraulic fluid power two-port slip-in cartridge valves cavities identical with ISO 7368 1989《液压流体动力 两通口筒形插入阀 阀腔》.pdf
  • DIN ISO 7388-1-2014 Tool shanks with 7 24 taper for automatic tool changers - Part 1 Dimensions and designation of shanks of forms A AD AF U UD and UF (ISO 7388-1 2007)《自动换刀用7 24圆锥.pdf DIN ISO 7388-1-2014 Tool shanks with 7 24 taper for automatic tool changers - Part 1 Dimensions and designation of shanks of forms A AD AF U UD and UF (ISO 7388-1 2007)《自动换刀用7 24圆锥.pdf
  • DIN ISO 7388-2-2014 Tool shanks with 7 24 taper for automatic tool changers - Part 2 Dimensions and designation of shanks of forms J JD and JF (ISO 7388-2 2007)《自动换刀用7 24圆锥工具柄 第2部分.pdf DIN ISO 7388-2-2014 Tool shanks with 7 24 taper for automatic tool changers - Part 2 Dimensions and designation of shanks of forms J JD and JF (ISO 7388-2 2007)《自动换刀用7 24圆锥工具柄 第2部分.pdf
  • DIN ISO 7388-3-2015 Tool shanks with 7 24 taper for automatic tool changers - Part 3 Retention knobs for shanks of forms AC AD AF UC UD UF JD and JF (ISO 7388-3 2013)《锥度为7 24的自动工具更.pdf DIN ISO 7388-3-2015 Tool shanks with 7 24 taper for automatic tool changers - Part 3 Retention knobs for shanks of forms AC AD AF UC UD UF JD and JF (ISO 7388-3 2013)《锥度为7 24的自动工具更.pdf
  • DIN ISO 7401-1989 Road vehicles lateral transient response test methods identical with ISO 7401 1988《道路车辆 横向瞬时响应试验方法》.pdf DIN ISO 7401-1989 Road vehicles lateral transient response test methods identical with ISO 7401 1988《道路车辆 横向瞬时响应试验方法》.pdf
  • DIN ISO 7425-1-1990 Hydraulic fluid power housings for elastomer-energized plastic-faced seals dimensions and tolerances piston seal housings identical with ISO 7425-1 1988《液压传动 弹性.pdf DIN ISO 7425-1-1990 Hydraulic fluid power housings for elastomer-energized plastic-faced seals dimensions and tolerances piston seal housings identical with ISO 7425-1 1988《液压传动 弹性.pdf
  • DIN ISO 7425-2-1990 Hydraulic fluid power housings for elastomer-energized plastic-faced seals dimensions and tolerances rod seal housings identical with ISO 7425-2 1989《液压传动 弹性体赋能.pdf DIN ISO 7425-2-1990 Hydraulic fluid power housings for elastomer-energized plastic-faced seals dimensions and tolerances rod seal housings identical with ISO 7425-2 1989《液压传动 弹性体赋能.pdf
  • 相关搜索

    当前位置:首页 > 考试资料 > 中学考试

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1