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Answer/Explanation
the Ural Mountains
These mountains run in a general northern & southern direction, forming the eastern border of the European Plain and the border that divides the continents of Europe and Asia. feature that forms the eastern border of Europe, separating the continent from Asia.
Once upon a time there was a child, who had always wanted to be president of the United States of America. He grew up in a very humble family and with few resources, he didn't have the possibility of studying, but nevertheless he attended the schools and watched the classes through the window. Without realizing it, he got many contacts because he had an incredible personality, and reached unimaginable political positions. currently he postulated for presidency, and never imagined that his life would take that course. He just got lucky in the way.
Answer:
Every time they are dirty.
Explanation:
If you don't change the towels out for the sandwich station every time they get dirty, it can lead to some food born illnesses that you can potentially give customers. If a customer gets a FBI, you can lose a customer, or get sued. It is always best to change them every time they are visibly dirty to prevent accidents like FBIs from happening.