Monday, May 14, 2012
Hieght: 27in. It is one of the biggest owls in the world.
Wingspan is 45-60in.
colors: in the summer owls are usually brownish with some dark spots and stripes. In the winter they are completely white.
They have distinguishing characteristics: they have all whtie colors, they have the ability to hunt silently. they usually hunt during the day, unlike most owls.
They breed 8-10 eggs, their are laid on the ground or on hummocks becuase there arent trees in the arctic opart of the world.
Wednesday, May 9, 2012
The "Tundra Biome" is at the top of the world around the north pole.
Below a thin layer of tundra soil is its permafrost, a premanently frozen layer of ground. during the brief summers, hte top section of the soil may thaw just long enough to allow plants and microorganisms to grow and reproduce.
How cold is cold? The tundra biome is at the top of the world -- around the North Pole! Below a thin layer of tundra soil is its permafrost, a permanently frozen layer of ground. During the brief summers, the top section of the soil may thaw just long enough to allow plants and microorganisms to grow and reproduce.
In the tundra conditions are very cold, with a normal temperature less than 5 degrees celsius. An the precipitation (mostly waht they get is snow) less then 100mm per year. the summers are very brief with tempertautres above freezing lasting only for a few weeks at most. The summers concides with periods of almost 24 hour daylight, so their plant growth can be great.
1) The alakan tundra has an average of an annual temperature colder than five degrees farenheit adn receives less then four incjes of preciptatio a year.
2) Plants survive the harsh conditions of the tundra by going dormant through winter, growing protective coatings, or retaining old leaves for nutriton.
3) Animals have adapted to the alaskan tundra by developing warm winter coats, compact bodies to preserve heat, and camouflage for diffrent seasons.
4) Alaskan tundra does not have any trees. it is also very windy and has dramatic seasonal changes, including drastic changes in daylight hours throughout the year.
5) Alaska's tundra is threathened by airborne pollutants,. oil and gas development, and global warming.