Global Warming The Polar Bear
by David Ralph
Title
Global Warming The Polar Bear
Artist
David Ralph
Medium
Painting - Watercolor
Description
Global Warming: The Polar Bear - A polar bear's success as the top predator in the arctic circle depends on ice. Ice enables the polar bear to amble out onto the thick ice to areas and water holes where seals come up for air and rest. A large population of seals depends on a significant amounts of arctic cod, and vast mounts of cod rely on huge numbers of krill. And at the bottom of this arctic food chain is the green algae that blankets the bottom of the ice, all fed by a weak arctic sun. So, why is the polar bear in danger? Carbon dioxide and other pollutants are flooding our oceans and elevating the temperature of our seas. The arctic seas are growing warmer, glaciers are melting at a more rapid pace, and the ice is getting thinner each decade. Seals, fish, krill, and other marine organisms are struggling for survival and changing their behaviors as a response. Thawing permafrost and smoldering fires in the arctic tundra are releasing methane gas that, along with carbon dioxide in the atmosphere, combine to block the sun's long-wave thermal radiation from escaping our atmosphere. Thus, our planet is warming little by little.
Uploaded
March 28th, 2020
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