AP BIOLOGY

Detailed explanation-1: -Much of Alaska and about half of Canada are in the tundra biome. Tundra is also found at the tops of very high mountains elsewhere in the world. Temperatures are frequently extremely cold, but can get warm in the summers.

Detailed explanation-2: -Tundra is the coldest of all the biomes. Tundra comes from the Finnish word tunturi, meaning treeless plain. It is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons. Dead organic material functions as a nutrient pool.

Detailed explanation-3: -It’s cold-The tundra is the coldest of the biomes. The average temperature in the tundra is around-18 degrees F. It gets much colder in the winter and warmer during its short summer.

Detailed explanation-4: -The arctic tundra is cold because higher latitudes receive less solar radiation, especially during winter when the sun can stay below the horizon for more than two months. The alpine tundra, found in higher altitudes such as mountaintops, are cold because the lower pressure allows air to expand and cool.

Detailed explanation-5: -Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy, and rainfall is scant. Tundra lands are covered with snow for much of the year, but summer brings bursts of wildflowers.