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保护地球用英语怎么说
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1.protecting the planet 2. preserve our planet 3. protect our planet 4. heal the world
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扫描下载二维码地球的英文介绍_中华文本库
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Subdivided into two regions, upper and lower, this dense layer made of hot, semisolid rock is located directly below the crust and is about 1800miles(2900 km) thick.
(Mantle-Lithosphere )
Made up of the crust and a tiny bit of the upper mantle, this layer is divided into several constantly (very slowly) moving plates of solid rock that hold the continents and oceans
(Mantle-Asthenosphere )
The plates of the lithosphere move (or float) on this hot, malleable semiliquid zone in the upper mantle, directly underneath the lithosphere. 1.2 (Explain their influence on the Earth)
Even if the causes of the phenomenon remain still difficult to determine, scientists agree in saying that the planet's magnetic pole is in continual movement.Its drift is most likely caused by the Earth's always moving molten, influenced by the fluctuations in solar radiation.Not corresponding to the position of the geographic pole, the magnetic pole moves at a rate of about 40 kilometers a year. Its drift across the North Pole is, each and every year, closely monitored by the Geologic Survey of Canada.
(Partially Molten)
The microstructure of partially molten rocks plays a key role in determining their physical properties. The area fraction of intergranular contact, contiguity, governs the establishment of a skeletal framework of solid grains and controls the effective elastic moduli of the aggregate. This work presents a theoretical calculation of steady state grain shape, contiguity, effective elastic moduli, and S
wave velocities for a partially molten aggregate containing an approximate melt volume fraction of 0.09. The steady state microstructure is controlled by surface tension gradients arising from interaction among adjacent grains in a close-packed aggregate. The ratio of viscosity between the grains and the melt, as well as the capillary number, strongly influence the contiguity
The earth formed approximately 4.6 billion years ago from a nebular cloud of dust and gas that surrounded the sun. As the gas cooled, more solids formed. The dusty material
accreted to the nebular midplane where it formed progressively larger clumps. Eventually, bodies of several kilometer these are known as planetesimals. The
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关于我们如何保护地球的英语作文
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People often say that the earth is like our mother. She gives life to all the living things on the earth and provides us with air, food, water and other essential things we need for living.
Once she was beautifhl and rich, but now she becomes dirtier and dirtier, poorer and poorer. It is due to what we have done to her. Please have a good look at her: polluted rivers and lakes, growing deserts, the destruction of the forests and wild life, and the depletion of the ozone layer…
Can she bear to see her children putting the waste here and there? Can she bear too see her children cutting down the trees and destroying the grassland, to see the acid rain destroying everything? Can we bear to see our mother suffering so much? Isn' it time for us to ask ourselves whether this is the way to treat our mother?
Floods, draughts, acid rain…,these are the punishments from nature. Everyone should know that there is only one earth, lfwe go on treating her like this, it won' t be fit for us to live in any longer. It' s time for us to love her, take good care of her and cure her. We should save the earth so as to save ourselves. the development of modern agriculture and industry, more and more waste water is being poured into rivers. It has caused serious pollution. The river is becoming so dirty that no living things can live in it. The river is giving off a terrible smell.
We make an urgent appeal that measures should be taken to cope with the situation. Our government should start building various facilities such as sewage treatment!plant and encourage scientists to work out more and better ways to reduce the pollution of water.
Water is tho source of our lives. It is very important to protect water.我人们经常说地球就像我们的母亲.她给了地球上所有生物生命,给我们提供生活所必需的空气、食物、水和一切基本的需要.
曾经她美丽富饶,而现在她变得越来越脏,越来越贫脊,那都是我们造成的.请好好看一看她：受污染的江河湖海、扩张的沙漠、森林和野生生物的毁灭、臭氧层的耗尽……
她能忍受她的孩子到处乱扔废弃物吗?她能忍受她的孩子砍伐树木、毁坏草原,让酸雨毁灭一切吗?我们能忍受她遭受这样的痛苦吗?我们该问问我们自己,这就是我们对待母亲的方式吗?
洪水、干旱、酸雨……这些都是自然对我们的惩罚.每个人都应该清楚人类只有一个地球.如果我们继续这样对待她,她将不再适合我们居住了.是该我们好好爱她、照顾她、治疗她的时候了.我们应该拯救地球,以便拯救我们自己. 随着现代工农业的发展,越来越多的污水排进河里,河水被严重污染.河水变得如此的肮脏以致于生物不能在里面生活.河水发出难闻的气味.
我们急切呼吁采取措施改变这种状况.政府应当建立各种设备,例如污水处理厂,并且鼓励科学家们想出更多更好的办法以减少水污染.
水是生命之源,保护水资源十分重要.仅仅这些还不够.我们大家必须竭尽全力防止拉圾污染环境以及拯救我们的城市,拯救我们的家园.
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earth is our mother .
we should not throw litter to river,ground and so on .sometimes,we could go to school on foot.to do this ,our earth will become better and better .our life will be beautiful ！what do you think of ?
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