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Precambrian Era (Emmalee) 4.6 billion - 544 million years ago

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Precambrian Era (Emmalee) 4.6 billion - 544 million years ago

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The Precambrian era is the first era starting from the beginning of earth to 544 million years ago. It is the era before the Paleozoic era. 6 billion years after the Precambrian era started (the start of earth) there was no land, just ocean and rocks. 3.5 billion years ago life started forming on earth. Multicellular organisms and bacteria were the first living things on earth. Towards the end of this era came the first mass extinction. The beginning climate in the Precambrian era was exceedingly hot but towards the end, it was cold. For the most part- the oceans were liquid rock, had boiling sulfur, exploding volcanoes, impact craters from falling rocks and asteroids. At the end of this era, like I said before, was very cold, so much that there was ice covering everything. The continents at this point in time were all underwater and not separated like they are today, they were combined. The only animals in this era were bacteria, sea pens, and jellyfish like creatures. There were no plants or animals not previously listed during this era. This era is the longest era of the 4 major eras since the start of earth but it was also very uneventful, probably most uneventful of them all. There were no dinosaurs or other extinct animals/places or how they went extinct in this era.

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I got most of my information on google classroom and the link above.

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Climate Policy Watcher

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Climate Policy Watcher Controlled burning of tires or TDF for fuel value occurs most frequently in two types of process units - kilns and boilers. This chapter will describe the general process operation of cement kilns and boilers. The various types of boiler configurations will be described with attention to the implications for burning tires or TDF.

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Time Era: Cenozoic era
Time Range: 66 million year ago to 1.8 million ago

1. different periods

Tertiary

Quaternary

2. Climate
The global climate was very warm at the beginning of the Cenozoic gradually cooling and becoming drier closer to the end of the era. Grasslands became more widespread making habitat for grazing animals like buffalo, horses, camels and others. Nearer the present the Earth entered an Ice age.
3. Geologic Events

The Rocky Mountains and Himalayas form

Continents continue to move into present - day positions

Continental glacier covers Antartica

Thick glaciers advance and retreat over much of North American and Europe, part of South America and Asia, and all of Antartica

4. Continents

Continents continue to move into present - day positions

5. Animals

Mammals

Insects

Humans

6. Plants

First grasses

Flowering Plants

7. Other facts

And so the Cenozoic era continues. It is the era we live in. Though we could hardly say this is the era of human. We have been present as a species only about 1.5 million years of the 65 million years of the current. That represents about 7 seconds on the clock of eras

8. References/Bivliography

https://www.fossils-facts-and-finds.com/cenozoic-era.html

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The Mesozoic Era was from 256-66 million years ago. The previous era is the Paleozoic Era and the following is the era we're in right now- the Cenozoic Era. It's divided into 3 periods Triassic, Jurassic, and Cretaceous. Reminds me of dinosaur train!

Jok jmd ergdrsth wedfa

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Time Era: Paleozoic
Time Range: 544 - 245 million years ago
Different Period:
-Cambrian
-Ordovician
-Silurian
-Devonian
-Carboniferous
-Permian
2. Climate during time era
The early Paleozoic climate was strongly zonal with the results that the "climate" in an abstract sense, became warmer, but the living space of most organisms of the time - the continental shelf marine environment - became steadily colder.
3. Main Geologic Events
Cambrian: Shallow seas cover much of the land.
Ordovician: Warm, shallow sea cover much of Earth
Ice cap cover what is now North Africa.
Silurian: Coral reefs develop.
Carboniferous: Appalachian Mountains begin to form.
North America and Northern Europe lie in warm, tropical region
Permian: Deserts become larger in tropical regions.
4. Position of the continents
Cambrian: Ancient continent lie near or South of the equator .
Silurian: Early continents collide with what is now North America, forming mountains.
Permian: The super continent Pangaea forms as all continents join together.
5. Types of animal in this time era
Invertebrates, Vertebrates
Insects and Spiders
Trilobites, and Corals
Amphibians, Reptiles.
6. Major types of plants in this time era
Great swamp forests of huge woody trees cover eastern North America and parts of Europe.