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By 2.
Question 1:
By 2.7 billion years ago Stromatolites were widespread in the Precambrian seas and still exist in hypersaline areas such as Shark Bay, Australia.
A.
True
B.
False
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Some questions from the same exam
By 2.7 billion years ago Stromatolites were widespread in the Precambrian seas and still exist in hypersaline areas such as Shark Bay, Australia.
This era lasted from 543 million to 251 million years ago.
This geological period lasted from 543 million to 490 million years ago.
What term refers to a raise in biodiversity which occurred during the Cambrian period?
Vertebrates evolved during the Cambrian period.
Anomalocaris was a predatory athropod of the Cambrian period which attained sizes of 100 cm or more.
What current day continent was once part of Laurentia?
This ocean existed throughout the Paleozoic in the northern hemisphere and is now represented by the Pacific Ocean.
What geological period followed the Cambrian and lasted from 490 million to 443 million years ago?
What science deals with the study of ancient life, the evolution of organisms, and paleoenvironments?
What is a fossil?
Scientists generally recognized how many major mass extinctions in the history of life on Earth?
It is possible to find the ages of rocks by measuring the amount of decay an unstable atom undergoes into a more stable atom.
Carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur, and energy are required by living things as well as trace amounts of numerous other elements.
When is it believed that the Earth formed?
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