Great Britan offers more economic opportunity an higher quality of life for Poles than their native country. After Poland joined the EU in 2004, it became much easier for Poles to immigrate to other member states, mainly Britan because of a lack of immigration restrictions for Poles (Germany and France had more restrictions)
the greatest environmental impact is increased greenhouse gases.
Explanation:
The fossil fuel are those elements that release tonnes of carbon dioxide on burning and they lead to the creation of greenhouse gas effect that creates problems for the increasing carbon content and since carbon absorbs much of the solar energy it raised the temperature of the earth and creates visible pollution on land, and water.