The air we breathe in is actually a m___ of different gases, such as oxygen, hydrogen and so on. 答案 答案:mixture.mixture表示"混合物",不定冠词a后接单数可数名词.故填mixture.我们吸入的空气实际上是不同气体的混合物,比如氧气,氢气等.相关推荐 1The air we breathe in is actually a m___ ...
The creation of the Davy lamp in 1815 was to spark our continual awareness regarding the impact of gas and chemical pollution.doi:HUMPHRY DAVYStephensBorg, KeithJournal of Perioperative Practice
Therefore all of the gases in the air breathed by a scuba diver at 40 meters are present at five times their usual pressure. Nitrogen, which composes 80 per cent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, ...
The air we breathe contains gases like oxygen and nitrogen that are essential to our customers. Air Liquide Engineering & Construction’s world-leading expertise and experience means the operation of our air separation facilities is not only adaptable to the different needs of those customers, but ...
3.Gas- An example of a gas is the air we breathe. It's not a liquid or a solid. You can't see it. Directions:Is it a solid, liquid, or a gas? Apple -solidliquidgas Wind -solidliquidgas River -solidliquidgas Inside of a balloon -solidliquidgas ...
Air pollution affects the air we breathe. It is made up of harmful gases, droplets, and particles. These make the air quality(质量) 1 . Many things can cause air pollution. Some air pollution is caused by burning fossil fuels(化石燃料). Oil is used to make gasoline for cars. Cars and...
But waste in landfill emits greenhouse gases as it rots, and can poison groundwater.───但是,填埋场中的垃圾在腐烂过程中会释放出温室气体,也会污染地下水。 Waste gases poison the air we breathe. The rivers and lakes are polluted by waste dumped in them from factories.───我们呼吸着有毒的...
B Air is the mixture of gases that you breathe. You cannot see, smell or taste air but it is around you. Layers of air surround the earth, too, making up the earth's atmosphere. Oxygen is a gas found in the air. All animals,including humans, need it to stay alive.Nitrogen and ox...
Pure food, pure water, and pure air are matters of interest to all of us. We can, to a large extent, control what we put into our mouths, but we can control the air we breathe, 500 cc about 15 times every minute, only by the use of elaborate artificial systems or by geographically...
What is in the air we breathe? What are some examples of light pollution? What is respiratory gas exchange? What lightbulb cuts down on light pollution the most? Which greenhouse gas is the most potent? What is the EPA standard for particulate matter? What is groundwater pollution? What is...