One of the most commonly cited and interesting biomes in the world is the desert. Located worldwide in arid regions, they cover over 18 million square kilometers. Deserts make up approximately 30% of the reachable land surface, making it one of the largest accessible biomes in the world. Most large deserts are concentrated at latitudes between 20 and 30 degrees north and south of the equator, but they can also be accessed where large mountain ranges produce intense rain shadows. One of the largest and most commonly cited deserts is the Sahara, located in North Africa, which covers 9 million square kilometers. Some tropical parts of the desert biome can experience annual temperatures of 30 degrees Celsius, which is very hot. The cold desert regions of North America, Central Asia and South America can have an average temperature of 15 degrees Celsius with a difference of up to 35 degrees Celsius between July and January. Deserts in high latitudes can experience freezing temperatures in winter. Deserts are characterized by a very unique severe moisture deficit that distinguishes them from other biomes and gives it its unique characteristics. Average annual precipitation in a desert biome is less than 50 cm per year, but often less than 10 cm per year as you move away from the equator. A unique statistic is that the Atacama Desert in Chile averages only 0.4 cm of precipitation per year. Some parts of the world, particularly the eastern Sahara desert, may not experience significant rainfall for 100 years, making it more difficult for biotic and abiotic organisms to survive. Due to the shift of the ITCZ ​​to higher latitudes, low latitudes generally receive rain and even when monsoon precipitation or...... middle of paper ...... Eastern and Western United States we always hear about these severe dust storms that have huge impacts of ecological disturbances. In areas like Arizona we can also see summer monsoons. Some challenges and threats to desert biomes remain as global warming continues to increase, increasing drought rates that block watering holes. These warmer conditions can turn into a greater spread of the fires we always hear about in the news that destroy life on Earth. In the absence of vegetation you can find grazing animals that destroy animal plants to maintain balance and survive. In the Western United States we hear about nuclear bomb tests where waste is dumped in the desert and test areas. Human impacts are so damaging to this biome that inadequate irrigation renders these rare lands infertile. Overgrazing also has a human impact due to the