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顾名思义,生物生存在地球表面上的一个薄层,这个薄层就叫做生物圈,是地球上生物生存繁衍的惟一家园。除地球之外,目前还没有发现哪个星球上存在生物的迹象,即使离地球最近的月球上,也空气稀薄、没有水,昼夜温差摄氏300多度,根本不适合生物的生存。地球生物圈包括大气圈的底部、水圈的大部和岩石圈的表面。生物圈为所有生物提供了生存必需的基本条件:水、空气、阳光、营养、适宜的温度及一定的生存空间。我们要好好珍惜保护这个人类赖以生存的空间。岩石圈是指地壳的固体部分,它的表层多覆盖土壤,是一切陆生生物的家园;水圈包括所有海域及内陆水域,但大多数海洋生物生活在
As the name suggests, creatures live on a thin layer on the surface of the earth. This thin layer is called the biosphere, and it is the only garden on the planet that survives and reproduces. In addition to the Earth, there are currently no signs of existence on any planet. Even on the moon closest to Earth, the air is thin and there is no water. The temperature difference between day and night is over 300 degrees Celsius, which is simply not suitable for the survival of living things. The Earth’s biosphere includes the bottom of the atmosphere, most of the hydrosphere and the surface of the lithosphere. The biosphere provides all living creatures with the necessary basic conditions for survival: water, air, sunlight, nutrition, appropriate temperature, and a certain living space. We must cherish the protection of this human space for survival. The lithosphere refers to the solid part of the earth’s crust. Its surface covers the soil and is the home of all terrestrial organisms. The water circle includes all sea areas and inland waters, but most marine organisms live in