Social exclusion means excluding people of a certain community.
1. Social exclusion is a cause of poverty because if the people are poor they don't have good sanitation, proper hygiene and religious beliefs which ultimately leads to being excluded by the rich and economically well established.
2. its a consequence because if the people are excluded they will not be able to get info about what's happening. they are not able to have trade or any other thing. ultimately they become poorer.