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).
The tundra is a bleak and treeless place. It is cold through all months of the year Summer is a brief period of milder climates when the sun shines almost 24 hours a day. It has been called the land of the midnight sun. But even the sun can't warm the tundra much. The short summer lasts only 6 to 10 weeks.