If citizens didn’t meet their duties the economy and judicial system would change terribly
Oceanography but the study of ocean creatures is Marine Biology
The economy of Africa consists of the trade, industry, agriculture, and human development. Following the independence of African countries during the 20th century, economic, political and other means
I would say b and d from your choices. This is because urban areas have jobs so there aren't people living in poverty there. Also, i don't see how poverty has to do with environmental issues, because if you're poor your more focused on survival (d) than other environmental issues.