The main components of smog are nitrogen oxides,
volatile organic compounds, peroxyacytyl nitrate and tropospheric ozone. Smog
is a mixture of air pollutants which are altered due to exposure to sunlight.
Walking is a type of cardiovascular exercise because it builds stamina in your body and also increases the efficiency of your heart and lungs.
A. Speed
Amphetamine, a stimulant, is commonly reffered to as 'Speed'
Please please help me with this please
paragraph autobiography about recent past
B. People are less physically fit and productive.
