Mountains are rich in natural resources, but they also block movement and trade and isolate regions and people.
The effects of acid rain are most clearly seen in the aquatic, or water, environments. For an example, streams, lakes, and marshes.Acid rain flows to streams, lakes, and marshes after falling on fields, forest, roads, and buildings. Acid rain also directly falls on aquatic habits.
The earth tilts for different times of the year. During the summer Alaska is a lot closer to the sun than florida.