Questions

A relationship.

The relationship where both the participating entities belong to same entity type is called Recursive relationship

Muhammad had to leave Mecca his birth place where he started preaching and take refuse in Medina, where he was given a warm welcome. This event took place in AD 622 and is known as the year of the Hijira, or migration, which became the first year of the Muslim Calendar.

Inbound Marketing :

     Inbound marketing refers to marketing activities that bring visitors in, rather than marketers having to go out to get prospect's attention.

1. Communication is interactive and two-way.

2. Customers come to you via search engines, refferals and social media

3. Marketers provide value

4. Marketers seek to entertain and/or educate

5. It is a cheaper way of marketing

6. It is the new trend in marketing

7. People are more in control of what information they receive and how

Outbound Marketing

    In Outbound marketing the company contacts the customer through a message. It uses offline methods such as trade shows, mails to customers and calling customers.

1. Communication is one-way.

2. Customers are sought out via print, TV, radio, banner advertising and cold calls.

3. Marketers Provide little to no added value.

4. Marketers rarely seek to entertain or educate.

5. It is expensive compared to inbound marketing

6. It is one of the traditional methods of marketing.

7. In outbound marketing company is in control.

Secondary pollutants include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight.

Whereas Primary pollutant are those pollutants that are directly emitted from their sources, like CO2, CO, SO2 as these gases are directly emitted form burning of fossil fuels.

Acid rain, which is formed when sulfur dioxide or nitrogen oxides react with water, sulfuric acid etc.

Hence, Acidrain is a secondary air pollutant.