5.The diagram below shows the composition of gases in the air we breathe in.Water vapour and Carbon dioxide other gases Oxygen Which of the options below correctly shows the changes in the composition of Tgases in the air we breathe out?(1)个(2)(3)(4) 相关知识点: 试题来源: 解析...
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, ...
2.Liquid- Examples of liquids are milk and water. A liquid is not hard. You can see a liquid. We can't show you a gas because you can't see a gas. 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...
The air we breathe on the surface is a mixture of several gases including oxygen, nitrogen, argon, carbon dioxide, and other gases in trace amounts. We breathe easiest with 21% oxygen present in the air. When other gases contaminant the air, the oxygen levels drop, and that is when the...
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...
Step on the gas, we're late.加大油门,我们要迟到了。 Alternate: the gas a person or an event that is fun有趣的人(或事物) The party was a real gas.这次聚会真有趣。 wind See also: be cooking with gas verb: to kill or harm somebody by making them breathe poisonous gas用毒气杀伤;使...