The top routes that United Airlines flies are: 1  CLT to ORD with 3,755 flights per month. 2  CLT to IAH with 3,511 flights every month. 3  DFW to ORD with 3,486 flights every month.  DFW to EWR with 3,268 flights every 1  month. PHL to ORD with 3,238 flights every month.
The first of the three rock types to form on Earth were the igneous rocks; formed from the cooling and solidification of magma, as the Earth was at one time completely molten. â¦. 4 people found this useful.
Rocks formed when magma becomes solid are known as igneous (fire-formed) rocks. One type of igneous rock is granite, which is formed from magma that never reaches the Earth's surface. This magma slowly cools within the Earth. Large crystals of minerals grow within the magma as it gradually hardens.ocks formed when magma becomes solid are known as igneous (fire-formed) rocks. One type of igneous rock is granite, which is formed from magma that never reaches the Earth's surface. This magma slowly cools within the Earth. Large crystals of minerals grow within the magma as it gradually hardens.