Low blood oxygen, known as hypoxemia, means that the level of oxygen in the blood has fallen below normal levels, due to one or more of many different causes. Under most circumstances, breathing room air, normal readings range from 95 to 100 percent.ow blood oxygen, known as hypoxemia, means that the level of oxygen in the blood has fallen below normal levels, due to one or more of many different causes. Under most circumstances, breathing room air, normal readings range from 95 to 100 percent.
Which biome is characterized by very low temperatures, little precipitation, and permafrost? Tundra, Which two biomes have the least amount of precipitation? Desert and tundra: A biome is identified by its particular set of abiotic factors and its ___. characteristic plant and animal communities Palm trees and shrubs around a small pool of water in the middle of a barren desert is an example of ____.
Different scientists classify biomes in different ways. This site, for example lists Tundra, Coniferous Forests, Grasslands, Shrublands, Rainforests, Temperate Deciduous Forests and Deserts as biomes. What it highlights is the distinguishing feature of each of these biomes. For example, it says that the desert only gets 10 percent of the rain that a rainforest gets! The site has links to other educational sites that show examples of different biomes, such as the Desert Life in the American Northwest.