Series means connecting a negative terminal of one battery to the positive terminal of another battery to increase the Voltage. A Parallel connection on the other hand, means connecting like (Positive to Positive and Negative to Negative) terminals of batteries together.eries means connecting a negative terminal of one battery to the positive terminal of another battery to increase the Voltage. A Parallel connection on the other hand, means connecting like (Positive to Positive and Negative to Negative) terminals of batteries together.
photograph from the Smithsonian Photo library, copyright 1993, Smithsonian Institution, used with permission. Saber-toothed cats are some of the best known and most popular of all Ice Age animals. They are among the most impressive carnivores ever to have lived.Two different types of saber-toothed cats lived in the midwestern U.S. at the end of the last Ice Age. One type was the familiar sabertooth, represented by the genus Smilodon. These cats had enlarged canines usually associated with the name sabertooth.Their canines were up to 18 centimeters (7 inches) long.A mounted skeleton of Smilodon fatalis is shown in the above photograph.ne type was the familiar sabertooth, represented by the genus Smilodon. These cats had enlarged canines usually associated with the name sabertooth. Their canines were up to 18 centimeters (7 inches) long. A mounted skeleton of Smilodon fatalis is shown in the above photograph.
There is a myth that ice ages covered the whole earth in ice. The theory says they only covered as much as 30%. The theoretical extent of these ice sheets during the ice age 1.5 mya is shown in white on the map below. Ice ages are said to have occurred every 150 million years, and last for at least 1 million years. According to the ice age theory, our current warm period will end with the beginning of another cold phase in 23,000 years time. Geologists claim that there have been 5 major ice ages.