Some mountains are volcanoes, and some volcanoes are mountains, but not all mountains are volcanoes, and not all volcanoes are mountains. For a mountain to be a volcano and a volcano to be a mountain, it must be formed from magma and volcanic materials from below the Earth's surface.
C. Antarctica because the rest are well put together. That is my best choice.
Answer:
Landscapes have economic value because the owners of the land or the area have many visitors coming and going and they can put up shops etc to get money
Explanation:
Decreases? I think.........