Rabin Kalikote

The transmission of data from a place to another using computer technology is called data communication.

The act of transferring data and information at a far distance for communication is called telecommunication.

The source of energy that can be used to reduce the negative impact of non-renewable sources of energy replacing these sources is called an alternative source of energy. Its examples are:

1. Biofuel
2. Nuclear energy

Any three advantages of hydropower are:

1. It is a renewable source of energy.
2. It is eco-friendly.
3. It is cheaper in the long-term.

Any two reasons for the statement 'hydropower is better than fossil fuel.' are:

1. Hydropower is a renewable source but fossil fuel is non-renewable.
2. Hydropower is eco-friendly but fossil fuel pollutes the environment.

The liquid formed of fossil fuels such as petrol, diesel, and so on is called mineral oil. Any three advantages are:

1. It is cheaper for long-term production.
2. It can be easily transported.
3. It can be used to generate electricity.

The fuel formed from the fossils of plants and animals buried under the earth's crust for a long time is called fossil fuel. Any two examples are:

1. Coal
2. Petroleum products