How did a common language across the Muslim Empires help increase interconnectedness in Afroeurasia?

Can someone list any possible solutions to air pollution ?

Which area on the map would be most likely to have the most oil exploration in since the start of the 21st century? a) b) c) d) plz me

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !