Why are scientist most likely working on developing cleaner-burning fuel for cars? a) to increase fuel consumption b) to increase fuel production c) to reduce noise pollution d) to reduce air pollution

Correct D). To reduce air pollution

There is need to develop a cleaner burning fuel in order to protect the environment from the air pollution caused due to the emission of carbon monoxide and sulfur dioxide in the air, which are known to cause air pollution and harm the human health and wildlife as well.

The incomplete combustion of fossil fuel used in the car is causing great damage to the atmosphere and results in global warming and the greenhouse effect.

Hence, there is a need to develop an alternative fuel that are cleaner and does not cause air pollution. Example solar energy, wind energy, bio-fuel etc.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation: