The American black bear lived during the same period as short-faced bears (Arctodus simus and A. pristinus) and the Florida spectacled bear (Tremarctos floridanus). These Tremarctine bears evolved from bears that had emigrated from Asia to North America 7â8 ma.
A plenum space is a part of a building that can facilitate air circulation for heating and air conditioning systems, by providing pathways for either heated/conditioned or return airflows, usually at greater than atmospheric pressure.
This is exactly what your furnace plenum does before air is released and delivered. Other terms used for furnace plenum, are âsupply plenumâ or âintake plenum.â. Copyright Â© 2008-2015, HomeRepairgeek.com All rights reserved.