Precambrian Time

In the beginning, God created the universe. At first the earth was shapeless and covered in

During the Cambrian Period there was an explosion of life forms. Most of these were in the water. Many animals with no backbones lived in the shallow seas. These animals were invertebrates.

There was an increase of carbon dioxide in the Earth’s atmosphere, causing the Earth’s temperature to rise several degrees Celsius.

In the article “The volcano-climate connection” by Jack Williams the author states “Scientists now know that these volcanoes, especially Tambora- the largest volcanic eruption of the last 10000 years- had spewed large amounts of sulfur dioxide into the air, which combined with water vapor to create a sulfuric acid mist of tiny particles that blocked up to 1or 2 percent of the solar energy that normally reaches the earth for months following the eruption.” The sulfuric acid mix that entered the air reflected some of the sunlight back into the atmosphere which caused unusually low temperatures in some parts of the world. The change in global weather patterns also had a large effect on agriculture causing

The Mesozoic Era is an interval of geological time from about 252 to 66 million years ago. It is also called the Age of Reptiles, a phrase introduced by the 19th century paleontologist Gideon Mantell .

The Earth formed 4.6 billion years ago through collisions in the giant disked shape cloud created from the Bing Bang. It is a dynamic planet, with

In the beginning there was nothing except for the sun and giant Australian shepherds who ruled the land. These Australian shepherds lived in a palace, high above where the earth would once form, close to the sun. When new Australian shepherds were born they would often have parties to celebrate the new puppies. One day the emperor of the dogs and his wife had some new puppies, and the dogs threw the biggest party that the palace had ever seen, they were having so much fun that party shook the whole palace, and even the sun. Everything began to rumble and shake. So a part of the sun fell out of the sky hurdling and landing on Earth. This making a huge explosion. When this happened it created the rivers, mountains, rocks, and trees. The party

Thanks to static electricity ice, dirt, rocks and other grains of solid material slowly began to gather together forming bigger pieces, those pieces formed bigger pieces, having a “snowball” effect. They eventually became big enough to have their own gravitational field which then collected more material, eventually creating a planet. More material meant more mass, which gave the forming planet even more gravity. With tons and tons of material, and gravity pushing it together, intense pressure causes intense heat. This combination of pressure and heat gives the earth its molten interior.

Space scientists are attempting to comprehend which far-off worlds may have livable environments. To aid in this research a team has been studying the Earth past, “during the Archean era, one through half a billion years early ().” Earth atmosphere was unlike the present day Earth, possible because of different level of elements in the air. Astronomers find the Archean era Earth is the most unfamiliar world in their records. Haze in this world’s environment could play host to various elements, and block ultra violet radiation from the sun.

The Precambrian era does not have a previous era.But the era after the Precambrian was the Paleozoic. The Precambrian era was from 4.8 to 4.5 million years ago with the paleozoic era before it and then the Mesozoic era after. The time periods in the paleozoic era were Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Carboniferous, and Permian.The precambrian era did not have a previous Geologic era. The precambrian era had different periods which are Proterozoic, Archaean, and Hadean my major climate was the the ice age.my main geologic period was formation of earth and life for an example plants.The continents that the precambrian era had were pangia, animals that lived in the geologic era was waptia Dickinsonia protozoa

Today it is very simple to determine your location, you just simply turn your location on, on your phone. What did they do thousands of years ago before smartphones were around? This essay will explore how to determine your location along with the time frame in the Ancient World.

Prokaryote cells - bacteria and archeans. They are single celled organisms, where the DNA is not separate from the cytoplasm. These prokaryote cells formed the earliest and most primitive life on earth.

There are many variables within the climate change equation that must be taken into account to determine what is truly causing the climate change. Yet, recently, it has been observed that in years following a volcanic eruption the global temperature has been a couple of degrees cooler, and there has been increased precipitation. "The amount and global extent of cooling depend on the force of the eruption, the amount of particular gases emitted, and, perhaps, on the location of the volcano with respect to the world's global atmospheric circulation patterns." (NASA Homepage) The argument that volcanic eruptions cause the climate change is as follows: volcanic eruptions eject sulfur dioxide into the atmosphere, and the resulting stratospheric aerosols change the short and long wave radiation budget of the atmosphere. This causes a chain reaction in which the stratosphere cools off. (Welcome to MTU Geology Department) The diagrams below illustrate the many variables involved in a volcanic eruption.

Jurassic is a period of time with Dinosaurs, rodents and birds. There were also island seas consisting of sharks, sea monsters and blood-red planktons. The existing plants in that period were cycads, ferns and conifers. The Mesozoic era was about 245 million years ago to 65 years ago, so it almost lasted about 180 years in total. The Mesozoic era is divided into three periods of Triassic, Jurassic and Cretaceous. Mesozoic era means middle animals and it is the era, which the word’s fauna has changed from what is in the Paleozoic era and the most famous organisms of this era are dinosaurs. In the Mesozoic era, the extinction of more than 90 percent of species in the earth was observed and the reason behind it was mostly volcanic eruptions and climate changes. On the other hand, this era had massive changes that represented ecological niches and rise to new creatures such as rodent-size mammals and first dinosaurs. In Triassic, which was the first period of Mesozoic, the mammals and first dinosaurs existed. Later than that, the second period was Jurassic, which giant shaped dinosaurs and other kinds of dinosaurs were developed. Besides that the first flowering plants and primitive birds, with long teeth appeared in that era as well.

Lava flowed into the sea and warmed it, so many coral reefs died as a result of the change in temperature.