What Are Tundras? | National Geographic

what our Tundras Tundras are among the

what our Tundras Tundras are among the earth’s coldest and harshest biomes

earth’s coldest and harshest biomes

earth’s coldest and harshest biomes these ecosystems are treeless regions

these ecosystems are treeless regions

these ecosystems are treeless regions with extreme cold and low rainfall there

with extreme cold and low rainfall there

with extreme cold and low rainfall there are two different types of Tundras

are two different types of Tundras

are two different types of Tundras alpine and arctic alpine tundra occur on

alpine and arctic alpine tundra occur on

alpine and arctic alpine tundra occur on mountains where trees cannot grow in the

mountains where trees cannot grow in the

mountains where trees cannot grow in the high altitudes there the growing season

high altitudes there the growing season

high altitudes there the growing season is about 180 days mountain goats sheep

is about 180 days mountain goats sheep

is about 180 days mountain goats sheep marmots and birds feed on low-lying

marmots and birds feed on low-lying

marmots and birds feed on low-lying plants and insects Arctic tundra extends

plants and insects Arctic tundra extends

plants and insects Arctic tundra extends from the edge of the Arctic Ocean down

from the edge of the Arctic Ocean down

from the edge of the Arctic Ocean down to the coniferous forests of the taiga

to the coniferous forests of the taiga

to the coniferous forests of the taiga permafrost prevents trees from taking

permafrost prevents trees from taking

permafrost prevents trees from taking root

root

root but shrubs and other vegetation grow

but shrubs and other vegetation grow

but shrubs and other vegetation grow during the short summers which range

during the short summers which range

during the short summers which range from fifty to sixty days a variety of

from fifty to sixty days a variety of

from fifty to sixty days a variety of wildlife including arctic foxes polar

wildlife including arctic foxes polar

wildlife including arctic foxes polar bears and caribou live in the Arctic

bears and caribou live in the Arctic

bears and caribou live in the Arctic tundra global warming is changing the

tundra global warming is changing the

tundra global warming is changing the Arctic tundra and the changing Tundra is

Arctic tundra and the changing Tundra is

Arctic tundra and the changing Tundra is contributing to global warming the

contributing to global warming the

contributing to global warming the Arctic permafrost is deteriorating which

Arctic permafrost is deteriorating which

Arctic permafrost is deteriorating which alters not only the landscape but also

alters not only the landscape but also

alters not only the landscape but also the plants and animals that can live

the plants and animals that can live

the plants and animals that can live there

there

there in addition permafrost contains about

in addition permafrost contains about

in addition permafrost contains about 14% of the Earth’s carbon so as it melts

14% of the Earth’s carbon so as it melts

14% of the Earth’s carbon so as it melts that carbon is released into the

that carbon is released into the

that carbon is released into the atmosphere contributing to global

atmosphere contributing to global

atmosphere contributing to global warming

warming

warming [Music]