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These animals were raised in a controlled environment. Many plants are unable to survive in such a harsh environment. Heredity and environment are both important. Pollution is bad for the environment
It is important for Latin America to diversify it's economy because for one thing, L.A. wouldn't have to take the risks of a failed business by relying on one crop or resource. Another reason is that more diverse crops or resources brings in a steady amount of money with varied products, and L.A. would be taking their chances by just relying on one crop/resources.
The purpose of the Lewis and Clark expedition had the same purpose like many other expeditions: To explore unknown territories, establish trade with natives, show ownership
*In 1803 when the U.S purchased Louisiana from France, president Jefferson wanted to examine the land before settling there so he sent Lewis to be in charge of the expedition, and he invited Clark to come along
They also wanted to find a water way from the U.S to the Pacific
* The U.S also wanted to show that they owned the territory before other powers tried to claim it
