The three kind of landforms found on Earth are mountains, plains and plateaus. Mountains are natural topographical features that may reach great heights, while plains and plateaus are lower, longer...
leukemia leuÂ·keÂ·miÂ·a (lÅÅ-kÄ'mÄ-É) n. Any of various acute or chronic neoplastic diseases of the bone marrow in which unrestrained proliferation of white blood cells occurs and which is usually accompanied by anemia, impaired blood clotting, and enlargement of the lymph nodes, liver, and spleen.
Leukemia is actually a group of different cancers of the blood cells. Leukemias can be acute or chronic, and people with chronic leukemias may not notice any symptoms before the condition is diagnosed with a blood test. Acute leukemias are more likely to cause symptoms.