We need certain things to stay alive and healthy. we need clean air to breathe and pure water to drink. we need also food that is safe to eat and housing to shelter us. but we can't get all these things by ourselves. we live in larger communities so we can solve our health problems only working together. polluted air is a community problem. air becomes polluted in many ways. cars, trucks, buses,and airplanes are among the worst polluters. they send partly burned gases into the air. air can be also polluted by smoke and gases from factories; some of the harmful gases that pour into the air are invisible. dirt, smoke, and gases in the air may be carried away by wind and by air currents, or settle over as a blanket of smog. air pollution can cause, or make worse diseases. they usually affect older people. but everyone may feel uncomfortable and suffer from lack of energy when air isn't clean. what do people do to cut down on air pollution? today, many factories use devices to reduce the smoke, dust, or harmful gases. special kinds of gasoline for cars can help reduce air pollution. more efficient engines can help too. перевидите
Загрязнение воздуха может вызвать или усилить заболевания. Они, как правило, влияют на пожилых людей. Но каждый может чувствовать себя не комфортно и страдают от недостатка энергии, когда воздух не чист.Что делают люди, чтобы уменьшить загрязнение воздуха?Сегодня многие фабрики используют устройства для уменьшения дыма, пыли или вредных газов. Специальные виды бензина для автомобилей может уменьшить загрязнение воздуха. Более эффективные двигатели тоже могут