The correct answer is D. carbon dioxide
There's a lot of nitrogen and oxygen in the air but it doesn't do much for weather processes. What does change them is carbon dioxide which is the main cause of things like global warming or the greenhouse effect. Emissions of carbon dioxide are extremely dangerous for the environment.
Hi !
Which is the most important factor in successfully quitting tobacco?
<em>1) a strong personal commitment </em>
<em>2) support from friends and family</em>
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Answer:
Fires can cause devastating effects to any type of premises. However, schools in particular are at significant risk. They are often filled with numerous fire hazards and potentially hundreds of students, many of which may be vulnerable or don’t fully understand what to do during a fire. This can make evacuation procedures difficult.
