jack253680
05.03.2021 •
Biology
Explain why we are more likely to get several colds every year but if we have the chicken pox once we are likely never to get it again. Use keywords: memory cells, white blood cells, immunity, antigens, Jantibodies
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Ответ:
air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. these particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. the solid and liquid particles suspended in our air are called aerosols.