Episode 4: The Generation of the Wolf
Bone marrow – Soft tissue in the hollow interior of bones. In adults, bone marrow in large bones produces new blood cells. Bone marrow composition is one way that biologists can study what the health of an animal was when it died.
Did You Know?
Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.