Questions

Internal marketing is the process of motivating and empowering the employees of a company to work as a team for the overall well-being of the customers and thereby the company itself. This is actually the core to succes of a company. A harmonised effort  within the company is an utmost necessity to provide customers with services at a desired level. If a firm doesn't deliver the service it promises in its marketing campaign, it will fail for sure. And it only can keep that promise when all of its employees at all levels realise what actually it is going to deliver. 

Distributed systems work in a network. They can share the network resources, communicate with each other.

'and made India' should be used to make the sentence grammatically correct. You use 'made' when referring to things already done in the past.'Make' is present and its continuous its still been done unlike 'made' which refers to what has been done

The statements true about viruses are :

1. The capsid enters the host cell if the virus is enveloped.

2. Enveloped viruses bud from the host cell. 

3. HIV contains reverse transcriptase.

4. A retrovirus contains RNA.

Norway is the top most country in the world's happiest country's list 2017 and India ranks 122nd in the list below than the Pakistan and Bangladesh.