yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

What Are Tundras? | National Geographic


less than 1m read
·Nov 11, 2024

What are tundras? Tundras are among the Earth's coldest and harshest biomes. These ecosystems are treeless regions with extreme cold and low rainfall.

There are two different types of tundras: alpine and arctic. Alpine tundras occur on mountains where trees cannot grow in the high altitudes. There, the growing season is about 180 days. Mountain goats, sheep, marmots, and birds feed on low-lying plants and insects.

Arctic tundra extends from the edge of the Arctic Ocean down to the coniferous forest of the taiga. Permafrost prevents trees from taking root, but shrubs and other vegetation grow during the short summers, which range from 50 to 60 days. A variety of wildlife, including arctic foxes, polar bears, and caribou, live in the arctic tundra.

Global warming is changing the arctic tundra, and the changing tundra is contributing to global warming. The Arctic's permafrost is deteriorating, which alters not only the landscape but also the plants and animals that can live there.

In addition, permafrost contains about 14% of the Earth's carbon, so as it melts, that carbon is released into the atmosphere, contributing to global warming.

More Articles

View All
Dino Dig - Linked | Explorer
NARRATOR: Welcome to Moab, Utah, surrounded by thousands of square miles of Mars-like Red Rock landscape and the mighty Colorado River. Surprisingly, Utah has yielded fossils from more dinosaur species than any other state. And that fact alone makes for a…
How Sustainable Plantations Help Save Uganda’s Decimated Forests | Short Film Showcase
[Music] [Music] [Music] People have cut down trees because they need fuel. People have cut down trees because they need to construct homes. It is important that people do have access to forest and timber resources, but this needs to be on a sustainable ba…
Limits of combined functions | Limits and continuity | AP Calculus AB | Khan Academy
So let’s find the limit of f of x times h of x as x approaches 0. All right, we have graphical depictions of the graphs y equals f of x and y equals h of x. We know from our limit properties that this is going to be the same thing as the limit as x appro…
See Whales, the Northern Lights, and Norway’s Pristine Beauty | Short Film Showcase
Refused to actually take a pin and rotate that pin on a piece of cotton around the position of Trump, sir. Then you’re closer to the North Pole than you are. Though the landscape of northern Norway is pristine and beautiful, it’s probably one of my favor…
Hunting for Deer | Life Below Zero
♪ ♪ ♪ ♪ Yeah, you can see that, uh, something just came down through here. All this lichen’s all rubbed off. Could be, probably more than likely an old slide, maybe a bear come down through here. Never know. Not seeing any tracks or signs. So I don’t …
Why These Cute Little Lizards Are Changing Colors to Survive | National Geographic
[Music] We’re interested in the big questions in [Music] biology. All of the animals that colonized this area had to go through an incredible amount of change in order to live in this unique environment. Hey, hey, hey, hey, hey, hey, hey, hang on, hang o…