C. subsistence; <span>it's self-sufficiency farming where the farmers focus on growing enough food to feed themselves and their families</span>
Answer:The Trans Pecos
Explanation:The Guadalupe Mountains and the Davis Mountains are located in this ecoregion, making it the most mountainous area of Texas. In general, soil in this region is eroded due to the decline of grasslands.
It is caused by volcanic activity that create new crust. As the intrusive volcanism occurs undersea,the lava would fill the crack then cooling down to form new crust. The crust is then expanded and pushing the rest of the crust sideway causing seafloor spreading.
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It would be B. The Alps. The Alps one of the only mountain ranges in the world tall enough to be classified as "Highland climate," and certainly the only one big enough out of the list mentioned to be classified that way.