C. There is almost no oxygen in the air on Mars. D. Mars is smaller than the E. arth,and it is quite a bit cooler. F. 项不正确。其他三项都与文章相符。 2I.阅读理解AThe earth is the only planet that scientists thinkhas life. Why does the earth have life while the otherplanets(...
Is there oxygen in the exosphere?Exosphere:The exosphere is the outermost layer of Earth's atmosphere and also the thickest, extending from at least 350 miles above the surface to many thousands as it fades into the interstellar medium. The air is extremely thin here, as gravity is negligible...
Unregulated mines and uncontrolled sprawl make La Rinconada, Peru, a dangerous place where the desperate seek their fortunes.
根据第四段中的“There is plenty of water to drink or to live in.”,“The atmosphere has a lot of oxygen in it for animals to breathe,”以及“the temperature is just right for plants, animals, and humans in most places on Earth.”可知生命存在于地球是因为地球上有水,空气和温度。故答...
Inorganic mercury.This type of mercury is formed when Hg is combined with other elements (except for carbon), such as chlorine, oxygen or sulphur. After reacting with the other element, the Hg is converted into an inorganic mercury compound, like mercuric chloride, mercuric...
We have liquid water, and our air is made of mostly nitrogen and oxygen. It takes three hundred and sixty-five days for us to circle the Sun. We only have one moon.Next to us is Mars. Mars also has a core of rock and iron. It is a little more than half the size of Earth. ...
What volume of oxygen would be required for the complete combustion of 23.4g of benzene, C_6PO_4? Oxygen gas was discovered by decomposing mercury(II) oxide. 2HgO(s)--> 2Hg(l) + O2(g) What volume of oxygen gas would be produced by the reaction of 35.2 g of the oxide, i...
but all the planets in our solar system have an atmosphere, either toxic or friendly, including Mercury5. Planets do not have the autonomy of atmospheres. Titan, one of Jupiter's moons, has an atmosphere. The atmosphere normally consists of Hydrogen, Helium, Oxygen (but not enough to breathe...
A gas is any substance that is neither liquid nor solid, for example oxygen or hydrogen. 气体 Be made of这个句型,在日常生活中多使用,孩子就学会了。 比如: What is the table made of? 桌子由什么制造的? ——The table is made of wood. ...
C) Conservationists argue that humans have an ethical obligation to protect other species, that diversity and natural beauty are highly prized by mankind, and that biodiversity is a vital resource: We rely on ecosystems to provide food, oxygen and natural resources, recycle wastes and fertilise soi...