Paleozoic era
This Era is known as the age of great dying
What is the Paleozoic era?
The Mesozoic Era was the age of ............
What is reptiles?
What is mammals?
The precambrian super era was __% of earth's geological history up until now
What is 90%?
How long ago did the Paleozoic era occur?
What is 541-252 million years ago?
Pangea began to break apart during the Mesozoic period, how many years ago?
What is 175 million years ago?
Which epoch are we currently in , within the Cenozoic period?
What is the the Holocene epoch?
When did the precambrian super era begin and end?
What is 4600 million years ago - 541 million years ago?
Name the periods of this era in order from earliest to latest?
What is Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian?
Was the earth warmer or colder in the Mesozoic Era then today and why?
What is the Earth was warmer during the Mesozoic Era, as a result of volcanic activity, lack of polar ice and other natural forces.
Name both the current mass extinction occuring and the animal responsible?
What is the Holocene Extinction and humans?
Name the 3 periods of the precambrian super era, and in which one did multicellular organisms begin to evolve?
1. Hadean
2. Archaean
3. Proterozoic
* Multicellular organisms evolved in the Proterozoic
How did the ice age during the Devonian period affect aquatic organisms?
What is there were periods during the ice age of Devonian where there were low levels of dissolved oxygen which resulted in the extinction of a variety of aquatic species.
Which species made up 20% of plant life during the Mesozoic period and what is it's importance?
Did sea level increase or decrease throughout the Cenozoic era and why?
What is sea levels decreased due to low temperatures which caused glaciers to form.
What was the event that occured early in the Precambrian making earth incredibly cold, and what evidence is there of it
The Huronian glaciation. Glaciers and ice sheets left behind rocks and other formations in places like West Australia, North America, Finland and Southern Africa that prove that the earth was once covered in ice during this era.
What are the two mass extinction events of the Paleozoic Era and affected organisms for each?
What is late Devonian extinction (variety of corals, trilobites, and brachiopods) and Permian-Triassic Extinction (Mainly Marine invertebrates however all species were impacted) ?
What is the name and cause of the mass extinction that resulted in the dinosaurs to become extinct?
What is Cretaceous-Paleogene Extinction?
There is not one confirmed cause of this extinction. However, supposed reasons include asteroid impact, volcanic activity or a combined mix of both
How did the formation of mountain ranges affect the climate?
What is the formation of mountain ranges affect the climate by altering wind and rainfall patterns. The newly exposed rock absorbs carbon dioxide through weathering which decreases greenhouse gases and contributes to cooling the earth.
Was there a mass extinction during this era? What was the cause, organisms affected and year that it occurred?
Yes, there was an extinction, around 650 million years ago. It is referred to as the Great Oxygenation Event. During this event large amounts of oxygen was produced by photosynthetic plants which killed the majority of anaerobic organisms that are unable to live with oxygen.