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).
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.nother type of tundra is the alpine tundra, which is a biome that exists at the tops of high mountains. Special features: This is the earth's coldest biome. Since the sun does not rise for nearly six months of the year, it is not unusual for the temperature to be below -30Â°F in winter.