1 Two examples of public transport would be going by bus or taking a cab.
2 CFC gases are dangerous due to the fact that they destroy the earth's protective ozone layer, which shields the earth from harmful ultraviolet rays generated from the sun.
3 I can help people with vehicle parts and IT. I'm a licensed mechanic and a good enough programmer.
4 Materials such as glass bottles, drinks cans and food cans.
5 Electricity generation sources are hydro, wind, oil, solar.
6 Air pollution happens through the burning of fossil fuels, agricultural activities, waste in landfills, exhaust from factories and industries, mining operations and so on.
