Macrocytic RBCs are large so tend to have a higher MCH, while microcytic red cells would have a lower value.. MCH is one of three red blood cell indices (MCHC and MCV are the other two). The measurements are done by machine and can help with diagnosis of medical problems.
Alaska's Bogoslof Volcano. Bogoslof volcano, located in the Aleutian Islands about 98 km (61 mi) northwest of Dutch Harbor/Unalaska, is in an active eruption sequence that began in mid-December 2016 and continues today.
In 1912 Novarupta Volcano on the Alaska Peninsula violently erupted and rocked the area now known as Katmai National Park and Preserve. The wilderness was turned into a dynamic landscape of smoking valleys, ash-covered mountains and small holes and cracks fuming with steam and gas.