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 Two Epochs. The Quaternary Period can be divided into two major epochs; the Pleistocene and the Holocene.. The Pleistocene epoch started 1.8 million years ago and ended around 11,000 years ago, while the Holocene started 11,000 years ago and still continues today.cientists refer to the era as the Age of Humans, the time was when hominids gained a foothold on earth. All of the plants and animals that we see today are part of the Quaternary Period; however, there are also extinct animals and plants that lived on the earth during its early stages.