Precambrian Era
what is the Precambrian era and how long did it last
The Precambrian era is the first era of life and it lasted about 4.6 million years
What was the continent covered in during this time
Great forest and plants
What super continent was formed during this time
Pangea
How long ago was this era
About 65 million years ago
How do you think the climate of the Paleozoic era might have influenced how evolution and how extinction took place.
This Impacted the evolution by the warmer climates and cooler periods the animals that were already alive during these times had to adapt to this
What was the earth most covered in during this time
Oceans and volcanic rock
what group was probably mostly found on land during this time
trilobites
What was the tallest dinosaur during this time
Brachiosaurus
"some of the largest _______ to ever walk this earth"
mammals
Compare Precambrian to Cenozoic era and explain how the Atmosphere was diffrent and how evolution was diffrent
These two eras were different because Precambrian Atmosphere didnt have alot of oxygen just mostly gas and had water animals while the Cenozoic era has alot of small mammals and the atmosphere was just right for land animals and Dinosaurs
True or False
This era is were humans were first found to be in
The correct answer is false
How long did it take till the Paleozoic era ended
251 million years
What two animals were found very numerous near the end of the Mesozoic era
T-rex and flying dinosaurs
This era also experienced a widespread of cooling periods known as ______
Ice ages
Explain why you think Dinosaurs were still dominating during the Mesozoic era even though mammals were formed
Mammals were still pretty small compared to the Dinosaurs
what type of life was found in this era of Earth
Fish jelly-fish and soft coral
What is the Paleozoic era known as _____
Era of Invertebrates
what is this era known as
This era is known as the _____
What were some of the most famous mammals found during this time
Saber tooth tiger, woolly mammoth
As Oxygen formed from the Precambrian times what started to form?
The ozone layer
Why have scientist found fewer fossil from this era than the last couple eras
This era was very long ago and lacked hard bodys and where mostly soft
Where did most of the animals during this time mostly form
In the ocean
Where was the asteroids impact that caused the dinosaurs extinction
Near mexico
During the last 4 million years "hominids appeared
what does "huminids" mean or the other word for it
Humans
Explain how the atmosphere from Precambrian is different from the atmosphere we have today
The air from Precambrian almost had no oxygen mostly made of methane carbon dioxide and more gases