Explanation:
When we are outside on a sunny day, we can see how our shadows change throughout the day. The Sun's position in the sky affects the length of the shadow. When the Sun is low on the horizon, the shadows are long. ... Due to the Earth's rotation, our view of the Sun changes throughout the day.
One many global warming is affecting Antarctica.
The factor that helped the United States in making the inland transportation and commerce to be possible is in letter C. The intricate river system. I hope you are satisfied with my answer and feel free to ask for more if you have clarifications and questions.
Valleys can be found in areas where there are alot of Mountains, Canyons can be found in places near rivers, plains are found in central North America, and Volcanoes can be found on islands.