New Roof Installation vs. Repair. Just because your roof springs a leak doesn't mean you need to call a roofing contractor right away. It's important to distinguish the cost of a new roof -- almost $6,500 on average -- versus the much more affordable $550 to repair a roof.
Report Abuse. 1  Beginning Of The Modern Age. 2  No Age has an absolutely definite start (or finish). 3  Technically, the medieval period ended and the modern era began when Columbus discovered America, or at least some islands in the New World, in October 1492.  Every single day for the last ten thousand years.
The Cenozoic Era is divided into three periods: 1  Paleogene Period (65-23 million years ago), which consists of the Paleocene, Eocene and Oligocene epochs); 2  Neogene Period (23-2.6 million years ago), which includes the Miocene and Pliocene epochs);he Cenozoic Era, which began about 65 million years ago and continues into the present, is the third documented era in the history of Earth.