Question

How euro 1 and euro 2 norms work towards reducing air pollution?

Answer 1

They reduced the emission of carbon dioxide, nitrous oxide and hydrocarbons which are harmful to the environment.

Answer 2

Explanation:

If you are writing out an amount in euros, use the currency symbol or euro sign € . Note that the symbol € goes before the amount and that there is no space between them (e.g. € 50).