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Could Polar Bears Survive In Antarctica?
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Could Polar Bears Survive In Antarctica?
Millions of years ago, Earth’s continents sat together as a single super-continent: Pangea. Animals of the time could travel across landscapes which are now separated by massive oceans. But when Pangea broke apart about 200 million years ago, this level of animal mixing came to a halt.
It just so happened that the ancestor of today’s polar bears ended up on the continental slices that became Europe, Asia, and North America. These ancestors gave rise to North America’s brown bears 1.4 million years ago, well after Pangea broke apart. It wasn’t for another 1 million years that an albino version of the brown bear evolved and began to thrive in the Arctic, making the polar bear a relatively recently-evolved animal in Earth’s long history.
Polar bears are large, white bears that like cold climates, fatty meals, and long days of hunting. No matter how adorable polar bears look, these animals are not cuddly. In fact, polar bears are ferocious hunters, and they are the biggest carnivores among land animals.
The loss of polar bears at the hands of melting sea ice has led some to suggest relocating these beloved animals to Antarctica. The amount of sea ice is shrinking in Antarctica, too, but nowhere near as rapidly as in the Arctic. If polar bears are given sturdy ground, might they learn to survive?
Other Related Videos:
➽Audio: YouTube Audio Library
➽Narrated by: Zach Brown
#Polar #Bear #Antarctica
Millions of years ago, Earth’s continents sat together as a single super-continent: Pangea. Animals of the time could travel across landscapes which are now separated by massive oceans. But when Pangea broke apart about 200 million years ago, this level of animal mixing came to a halt.
It just so happened that the ancestor of today’s polar bears ended up on the continental slices that became Europe, Asia, and North America. These ancestors gave rise to North America’s brown bears 1.4 million years ago, well after Pangea broke apart. It wasn’t for another 1 million years that an albino version of the brown bear evolved and began to thrive in the Arctic, making the polar bear a relatively recently-evolved animal in Earth’s long history.
Polar bears are large, white bears that like cold climates, fatty meals, and long days of hunting. No matter how adorable polar bears look, these animals are not cuddly. In fact, polar bears are ferocious hunters, and they are the biggest carnivores among land animals.
The loss of polar bears at the hands of melting sea ice has led some to suggest relocating these beloved animals to Antarctica. The amount of sea ice is shrinking in Antarctica, too, but nowhere near as rapidly as in the Arctic. If polar bears are given sturdy ground, might they learn to survive?
Other Related Videos:
➽Audio: YouTube Audio Library
➽Narrated by: Zach Brown
#Polar #Bear #Antarctica
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