If you know that you are not pregnant, how long is too long before you should be alarmed if you don't have your period? What could be the possible reasons for a delayed period?
WEATHER: The tundra is the coldest and the driest of all the biomes on Earth. There is very little rainfall in the tundra; it rains less than ten inches a year. Winters here are long, and summers short, sometimes they last for only 6 - 10 weeks. In the winter the temperature can reach -50Â°F (-45.5Â°C).
Learn more about Tundra Plants and Tundra Animals. What is the Tundra Climate Like? The tundra is the coldest biome in the world. Winters are cold, dark and long. There are several weeks where sun never rises. The average winter temperature is well below -34 degrees Celsius and can fall to -70Â°C in extreme conditions.