What atomisheric layer is 140 plus km?

How do you do an epsilon-delta proof? What does Nueces mean? Can you help me on a question? What do you need to add to -6 to get 1? Jason's age is 3 times that of Shanea's. Their ages total 36 years. How old was Jason 3 years ago? What is the year and value of a Western Field 12 gauge model xnh565-f? Do a polygon's sides have to all be line segments? How do you solve X squared plus 2x plus 2? What are the prime number for 1265? How many months is a week? What two page numbers that are beside each other have the sum of 245? What is the superlative of truthful? What is 35 divided by 0.428? What does Aduana mean? Why is a ping pong ball pulled toward running water? What is 0 times undefined equal too? What is 9 over 16 reduce to? What is the LCM of 78 and 91? What is a distance covered per unit of time? What is the factorization of the trinomial 2x squared plus 9x plus 9?