geology a geologically long period of time during which the magnetic field of the earth retains the same polarity. The magnetic field may reverse during such a period for a geologically short period of time (a magnetic event)
IS YOUR DESERT PLANT KNOWLEDGE SUCCULENT OR DRIED UP?
Cactus aficionados, don't get left in the dust with this quiz on desert plants. Find out if you have the knowledge to survive this prickly foray into the desert!
Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
Words nearby magnetic epoch
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012