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.
A biome is a large ecosystem where plants, animals, insects, and people live in a certain type of climate. If you were in northern Alaska, you would be in a frosty biome called the Arctic tundra. If you jumped on a plane and flew to Brazil, you could be in a hot and humid biome called the tropical rainforest. The world contains many other biomes: grasslands, deserts, and mountains, to name a few.