The sharing of car journeys by persons travelling on the same route to save money and fuel:

1. car-sharing
2. shared cars
3. carpooling
4. pooling-car

Which of the following is NOT an advantage of carpooling?

1. It helps to save money in buying fuel
2. It helps to save money in maintenance cost of cars
3. It increases traffic congestion
4. It helps to use commuting time in useful pursuits

Non-smokers who breathe in the smoke exhaled by the smokers:

1. Secondary smokers
2. Active smokers
3. Passive smokers
4. Indirect smokers

The buried, combustible deposits of organic materials, formed as a result of heat and pressure in the earth's crust over hundreds of millions of years:

1. Fossil
2. Fossil Fuel
3. Crude
4. Combustions