Answer:
Several potential point sources of hazardous substances and Superfund sites sustained water damage and contaminants may have been released into the environment.
Block Mountains are tourist attractions.
Block Mountains with ice on top are sources of rivers when ice melt and these provide water for irrigation, transport and industrial development.
Block Mountains modify climate through influencing the formation of orographic rainfall.
Some Block Mountains contain minerals thus lead to the development of the mining industry for example former copper extraction from the Rwenzori Mountains and the current cobalt extraction.
Rivers originating from Block Mountains form waterfalls from which hydro electric power is generated thus helpful for industrial development.
Russia has the largest land are in Northern Hemisphere.
All the answers are correct look at a map.
There are between 189 and 196 countries in the world. This number is not fixed as some territories claim that they are countries, but are not widely recognized as such.