Answer:
Soda-Lime Glass is used to make glass bottles because it is considered to be inexpensive and used in making light bulbs, windowpanes, and art objects. It got its name because of its ingredients which consist of Sodium Dioxide (Soda) and Calcium Oxide (lime). Glass is made by adding Silica, sodium oxide, calcium oxide and various raw material.
I would say 60 feet. Yards is what you would use to measure a foot ball field. It's way to big of a measurment for a telephone pole. Feet make sense because they are not to big, but not to small.
~Silver
The amount of heat they are exposed to has a lot to do with the inferences and observations that they make on the density of the earth's core. The inner core is the most compact due to the fact that they have a lot of direct exposure to heat and the gravity of the earth pressung down on it. The inner core is less subjected to those conditions.