Can someone assist me? I got points for sure

1. which of the following is a search engine? a) mozilla firefox b)internet explorer c)google d)safari 2. which of the following statements is true? a) all search engines will provide the same results when you enter the same query. b) all search engines use the same amount of advertisements. c) some search engines are also browsers. d) search engines often provide different results, even when you enter the same query.

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.

What is one reason why indoor air pollution has become an increasing problem.