Hlp on exam and its time Question 6 (2 points)
Which of the following is the best example of a way human lifestyles affect environmental systems?

a)Burning fossil fuels increases the amount of greenhouse gasses in the atmosphere.
b)Deforestation causes water pollution by decreasing water vapor in nearby lakes and rivers.
c)Using aerosol sprays increases the amount of ozone (O3) in the atmosphere.
d)Using radioactive materials causes ground pollution when chlorofluorocarbons (CFCs) seep into ground.