What needs are met by an organism's environment? There is always food of some sort, water, and most organisms need sunlight and find a habitat that has sunlight. There is also oxygen in all of the habitats. What are the two parts of an organism's habitat with which it interacts? The biotic and abiotic parts of an organism's habitat. What are the levels of organization within an ecosystem? There is the organism, then the population, then the community, and lastly the ecosystem. Why do you find different kinds of organisms in different habitats? Because certain types of organisms have different needs-some organisms need soil, while others, such as fish, only need water. Think about what will soon start happening within Belgrade. How do animals prepare for such a change? Some animals will go into hibernation when winter comes, while others will grow more fur in order to keep themselves warm. Some fish die when it gets too cold, and some fish simply go further down into the water where the temperature is adequate.

Here is a video of baboons in their natural habitat:
http://www.youtube.com/watch?v=LaXwYQtNkJw