However, scientists soon discovered that CFCs had a major downside. Because they are so stable, they can survive in the atmosphere long enough to eventually reach the ozone layer. Once there, they break down in sunlight and destroy ozone in the process. TheMontreal Protocolwas a global agreemen...
Why people on the ground need to be concerned about ozone levels in the air? Explain why ozone is a pollutant in the lower atmosphere but a necessary component of the earth's upper atmosphere. Why is the atmospheric ozone layer important? Explain why UV-B ...
a在物质方面,"从众"可以带来大量财富 In the material aspect, “follows the crowd " to be possible to bring the massive wealths[translate] a在问卷中,我们调查了消费者对于手机价格,功能,外观,品牌的喜好 In the questionnaire, we investigated the consumer regarding the handset price, the function, the...
but governments need to enforce the limits on CO2 emissions for the polluting industries in their countries for these to be effective. Also, individuals can play a part by making lifestyle changes. People should try to buy cars with the best fuel economy, and only use their car when really...
It's bringing many suggestions and demands, really, about how we as a people and we as a government should handle the issue.
Making these bigger clouds could backfire and cause less rainfall in some places and it could cause ocean currents to change.We don’t even know if these particles could have a negative effect on the ozone layer so there are potential dangers on the global scale....
We need to bring genuine scientific debate back to climate science before we waste trillions of dollars. We need to triage this crisis in climate science right now. Time is of the essence. The longer we delay, the greater the ultimate cost of this major mistake will become. ...
Our current balance leans in favor of the optimists. If we’re going to advance in a healthy, sustainable, and risk-managed way, we need to keep our expectations in check and ensure that we don’t lose sight of the negative possibilities of technology as well. ...
—Why is the traffic today moving so slowly?We are running late! —Calm down.Let’s take___route(路线). —Turn left over there. A.a same B.the same C.a different D.the different 试题答案 【答案】C 【解析】same“相同的”;different“不同的”。根据句意排除A、B。此处表示“泛指一条...
The first of these, known as “carbon removal” or “negative emissions technologies,” is something that scholars now largely agree we’ll need to do in order to avoid dangerous levels of warming (see “One man’s two-decade quest to suck greenhouse gas out of the sky”). Most n...