<span>4 are named after regions or sub-regions and include: Persian gulf, Mediterranean, pacific islands and eastern Mediterranean islands.</span><span />
Well it depends on where you live but I would say that it would depend on the number of cars used by each families, the rate in which they use them. You can also mention the use of public transport as a method to reduce this pollution problems.
Maybe include some statistics if you can find them.
Use your daily life experience I think it could help you :)
It created tension in the Earth's plates and they moved to form a tsunamai.
Land? Or are they looking for a fancier answer?
I think it would have to be B. Sublimation