The Tundra Biome
Earth's chilliest biome is the tundra.Extreme cold preventsa lot of plant growth.
The tundra is often adesert of ice with notrees. It has a layer of frozen ground called permafrost. Thisnever melts!
Tundras exist in the Arctic and Antarctic. These areas receive little sunlight at times. Some winter days have no sunlight at all!
Tundras are also found at the top of cold mountain ranges.Up high, it is too chilly and windy for much to grow.
The Climate
The tundra climate is mostknown for long, dark winters.Little precipitation falls there.
Temperatures can stay below freezing for up to ten monthsa year. Strong winds make temperatures feel even colder.
Extra hours of sunlightcome in summer.Sometimes the sunshines all day long!This warms the tundraand melts snow.
Melted snow cannot drain through permafrost. Pools of water form onthe land's surface. They refreezewhen colder weather returns.
The Plants
Only shrubs and other small plants grow in the tundra.They stay low to the groundand close together to avoidstrong, cold winds.
Plant roots stay near the surface.They cannot grow through permafrost.
Tundra plants live with littlewater and sunlight. They can grow under snow!
Plant leaves are small to limit water loss. In summer, flowering plants bloom quickly.
The Animals
Tundra animals have ways to survive the winter. Some hibernate during the extreme cold. Most birds migrate to warmer climates.
Many animals grow thick furand gain fat for warmth. Some have white coloring to blend in with snow. This helps them hunt or hide.
Animals are active inthe summer. They drink from the pools of melted snow. Some animals eat plants and insects.
Other animals hunt. They eat a lot to store up fat for thelong winter!
❄️Tundra❄️
1.Biome生物群系
2.Extreme cold极冷
3.Permafrost冻土
4.Arctic北极的
5.Antarctica南极的
6.Climate气候
7.Precipitation降水
8.Drain排干 排水
9.Limit有限的
10.Survive，存活，生存
11.Blend in融合
10个月宝宝每天需要喝多少奶粉？
