The hemoglobin test is often used to check for anemia, usually along with a hematocrit or as part of a complete blood count (CBC) . The test may be used to screen for, diagnose, or monitor a number of conditions and diseases that affect red blood cells (RBCs) and/or the amount of hemoglobin in blood.he hemoglobin test is often used to check for anemia, usually along with a hematocrit or as part of a complete blood count (CBC) . The test may be used to screen for, diagnose, or monitor a number of conditions and diseases that affect red blood cells (RBCs) and/or the amount of hemoglobin in blood.
Volcanoes form at hot spots in the Earth's crust, at convergent plate boundaries where subduction of oceanic crust is occurring, and at divergent plate boundaries where gaps i â¦ n the crust are being infilled with rising magma.
A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earthâs surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here.As a volcano erupts, it spills lava that flows downslope. volcano is formed when hot molten rock, ash and gases escape from an opening in the Earthâs surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here.