I would say that housing availability, inadequate services, pollution and migration from rural areas all present challenges to the regional urban areas but not reduced population. If there is migration to the cities then these above three problems must be dealt with to accommodate the new citizens.
I am scientist and i am going to collect data from a volcano today. I am most likely an Geologist.
geologist study about earth. therefore the person is most likely to study Volcano
I believe it would be the United States.. Alaska is at the north eastern tip of Russia
A) United States
He was 28th president of USA