The geologic time from 544 to 245 million years ago is known as the Paleozoic Era. It is divided into seven periods: Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, and the late Paleozoic. This era is characterized by significant developments in marine life, the emergence of terrestrial plants and animals, and major geological events such as the formation of supercontinents. The Paleozoic Era ended with the Permian-Triassic extinction event, the largest mass extinction in Earth's history.
The time periods of the Paleozoic and Mesozoic are subdivided into early middle and late instead of named epochs as they are in Cenozoic periods is due to the basis of the occurrence of particular fossils. It is also based upon the absence or appearance of geological horizons.
seven
7000.00 multiplied by 1 million is equal to 7 billion.
groups go vertically and periods are the horizontal rows
Periods on the periodic table are the rows running horizontally from left to right. There are seven periods in total, each indicating the number of electron shells an element's atoms possess. As you move from the top to the bottom of a period, the electron shells increase by one.
One million divided by seven = 142,857.143
Seven thousand million divided by three hundred million equals 23.33
Thirty seven billion divided by fifteen million is 2,466.67
Seven thousand (7000).
7000000 / 48 = 145,833.33333
0.72
141000000 / 7000000 = 20.14286
2333.33333333333333333333333333333333333333333333333333333
3,500,000
77000000000 / 40000000 = 1,925
25,500
142857.14