How Everolimus (Afinitor) Works. Everolimus (Afinitor, made by Novartis Pharmaceuticals) is an oral compound cancer treatment, and classified as a signal transduction inhibitor â specifically, an inhibitor of the mTOR protein that controls other proteins known to trigger tumor growth.
Description. The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert. Tundra is found in the regions just below the ice caps of the Arctic, extending across North America, to Europe, and Siberia in Asia. Much of Alaska and about half of Canada are in the tundra biome. Tundra is also found at the tops of very high mountains elsewhere in the world.
What Makes the Tundra Biome Unique. The Tundra biome is the coldest of all five world biomes. A Tundra is a treeless area near the Arctic where the ground is always frozen and there's very little plant life. Tundras are found just below the ice caps of the Arctic, across North America, in Europe, Siberia and Asia.Most of Alaska and almost half of Canada are located in the Tundra biome.Tundras cover about one-fifth of Earth's land surface. There are two different types of Tundras: Arctic and Alpine.undras are found just below the ice caps of the Arctic, across North America, in Europe, Siberia and Asia. Most of Alaska and almost half of Canada are located in the Tundra biome. Tundras cover about one-fifth of Earth's land surface. There are two different types of Tundras: Arctic and Alpine.