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CFCs are family of compounds containing the elements carbon, fluorine and chlorine. Which of the following statements is NOT true about CFCs? a. Ozone is attacked by chlorine atom that breaks free from the CFC molecule b. CFCs were to be found in aerosol sprays and refrigerants c. CFCs can remain in the atmosphere from up to 100 years d. Each CFC molecule destroys a single ozone molecule

The ion question is an example. You are not answering that question. It's just an example of how your answer should look for the other question.   Use evidence from the text and try to be detailed you can include prior knowledge you may know as well.

part 1 Given these two statements, which can be concluded? (1) Apart from adverse environmental effects, toxic air pollution can lead to serious health problems. (2) Reducing air pollution contributes to birth defects, genetic mutations, and cancer.   Only statement 1 is correct.   Both statements are correct.   Only statement 2 is correct.   Both statements are incorrect.

Atmospheric Carbon Dioxide Concentration Over Time 420 current- 380 340 300 1950 260 220 180 140- 400,000 350,000 300,000 250,000 200,000 150,000 100,000 50,000 0 (present) Years before present Source: NASA Global Climate Change, Carbon Dioxide Proxy Measurements, based on data from NOAA, June 2016 Which statement is supported by the data in the graph? O The amount of carbon dioxide in the atmosphere does not change. O Melting sea ice is caused by rising levels of carbon dioxide in the atmosphere. O Adding more carbon dioxide to the atmosphere causes Earth's climate to warm. O Carbon dioxide concentration in the atmosphere is higher now than at any other time in the last 400,000 years. co, (parts per million)

The following are Federal Air Quality Standards for the US CO: 35ppm (1-hour) NO2: 0.053ppm (Actually NOx but please use NO2 to calculate) 03: 0.075 ppm SO2: 75ppb (1-hour) a) Calculate the air concentrations in ug/m³ corresponding to the standards. Detail your calculations. b) What would be the mass concentrations on Mars if the little green men would apply the same standards in terms of mixing ratio. Explain your assumptions.

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Can someone explain to me why in the first part of the equation it would be 20-x instead of x-20?

10 Take a deep breath. What do you know about the air you are breathing? Think and reflect on the following questions and record your thoughts in your Thoughtbook. • What gases are present in the air you breathe? At what concentrations? • Which gas in the air is most essential to your life? • What gases in the air are responsible for acid rain? For global warming? • What other kinds of pollutants are in the air? Can you name any specific chemicals? We will revisit these questions at the end of the learning activity.

In 2008 China was the host for the Olympic Games, however pollution and smog was a major concern for hosting the games. What did China do to address the issue of smog and pollution for the Olympic fans traveling to China? A. China shut down factories permanently. B. China used cloud seeding to disperse clouds. C. China warned fans to use masks during the games. D. China was unable to address the issue of smog and had to delay some events. Sign out novo

1. Show in a reaction how chlorofluorocarbons CFCs destroy the ozone layer. 2. What percentage of dry air in the atmosphere in oxygen