Hawaii hotspot created at least 129 volcanoes, more than 123 of which are extinct volcanoes, seamounts, and atolls, four of which are active volcanoes, and two of which are dormant volcanoes. They can be organized into three general categories: the Hawaiian archipelago, which comprises most of the U.S. state of Hawaii and is the location of all modern volcanic activity; the Northwestern Hawaiian Islands, which consist of coral atolls, extinct islands, and atoll islands; and the Emperor Seamounts, all of which have since eroded and subsided to the sea and become seamounts and guyots (flat-topped seamounts). Hawaiian volcanoes are characterized by frequent
Chaparral Prairie State Nature Preserve Chaparral Prairie State Nature Preserve Chaparral Prairie State Nature Preserve is a nature preserve located in Adams County, Ohio, United States, near the city of West Union. The prairie is a remnant of what was once a larger ecosystem. These grassland openings were probably created by the extinct megafauna, such as mammoths and mastodons, that were once found in the area. Native American fires may have also played a role in maintaining this landscape. In modern times the prairie species found refuge on the dry, rocky openings in this part of the state. Today, controlled burns are used at Chaparral