1. In a certain organisms environment there is the food the organism eats. The organism can survive in that terrain or area. The whether conditions are just right for the organism and there isn't huge amount of predators.
2. It interacts with other living creatures in the same habitat and also the nonliving objects.
What are the levels of organization within an ecosystem?
3. You find different kinds of organisms in different environments, because some organisms don't survive in certain habitats, while others survive in that habitat. For example you wouldn't find a polar where in the tropics, because it lives on Arctic.
4. How do animals prepare for such a change?Some organisms will start collecting and storing food for the long winter while other will be getting ready to fly to warmer parts of the world.
http://video.nationalgeographic.com/video/player/environment/threats-to-animals-environment/polar-bears.html
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