EVERYDAY SCIENCE

Detailed explanation-1: -Tundra biome is located in the far north and is characterized by persistent soil ice (permafrost) throughout the growing season which in turn does not allow growth of any vegetation.

Detailed explanation-2: -Permafrost is soil that is permanently frozen. Permafrost is a permanently frozen layer on or under Earth’s surface. It consists of soil, gravel, and sand, usually bound together by ice. Permafrost usually remains at or below 0°C (32ºF) for at least two years.

Detailed explanation-3: -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.

Detailed explanation-4: -Tundra is found in the regions just below the ice caps of the Arctic, extending across North America, to Europe, and Siberia in Asia. Much of Alaska and about half of Canada are in the tundra biome.

Detailed explanation-5: -The highest parts of the arctic tundra can have winter temperature averages of −28 °C (−18 °F), sometimes dipping as low as −50 °C (−58 °F).