Paleoclimatology is the science that studies ancient climates of the Earth. According to this science, there have been many ice ages and glacial ages, and they have happened because of a phenomenon known as Great Oxygenation. This means the Earth had too many plants that were producing oxygen, which stopped the Greenhouse effect and brought cold temperatures to the planet. For example, around 360 to 260 million years ago, the ice age called “Karoo” happened because of the previous Great Oxygenation, and this glacial ice covered much of what is now India and Australia.
Answer:
its b i just did it i got a 100
Answer:
Correct answer is find a water route to the Pacific.
Explanation:
First option is the correct one as it refers to expedition that started after United States took Louisiana. President Jefferson wanted Lewis and Clark to research the west territories, so they could be appointed to United States, and that is why one of the goals was to reach Pacific Ocean.
Other options are not correct, as they didn't search for Natives, and especially a route for Canada.
Removal of Natives was not a part of this expedition at all.
Latin America is a geographical neighbor of the United States
