Stromatolites become very abundant in strata about ____ due to the _____. 1 bill
ID: 290868 • Letter: S
Question
Stromatolites become very abundant in strata about ____ due to the _____.
1 billion years ago; increase in the size of continental shelves
2.2 billion years ago; increase in the size of continental shelves
2.2 billion years ago; decrease in the size of continental shelves
1 billion years ago; decrease in the size of continental shelves
What is the general evolutionary pattern displayed by Neoproterozoic trace fossils?
The oldest trace fossils are simple tubes and become increasingly complex and varied up toward and into the Neoproterozoic, representing the evolutionary diversification of mobile animals in the world's oceans.
The oldest trace fossils are simple tubes and become increasingly complex and rare up toward and into the Cambrian, representing the evolutionary diversification of mobile animals in the world's oceans.
The oldest trace fossils are complex tubes and varied and become increasingly simple up toward and into the Cambrian System, representing the evolutionary diversification of mobile animals in the world's oceans.
The oldest trace fossils are simple tubes and become increasingly complex and varied up toward and into the Cambrian System, representing the evolutionary diversification of mobile animals in the world's oceans.
Which biologic change did not take place in the Proterozoic Eon before a billion years ago?
Stromatolites became abundant about 2 billion years ago, and their success at this time may have resulted from the growth of continental shelves.
Eukaryotes evolved through the ingestion of one kind of bacterial cell by another.
Trace fossils of the first metazoans are found in shallow marine deposits 2 billion years ago.
Fossils of multicellular eukaryotic algae occur in rocks about 2.1 billion years old.
Which is not evidence that oxygen began to build up in the atmosphere roughly 2.3 billion years ago?
The disappearance of banded iron formations about 2 billion years ago.
The lack of oxygen isotopes in sedimentary rocks before 2 billion years ago.
The appearance of red beds and highly oxidized soils first appear about 2 billion years ago.
Rarity of the easily oxidized minerals pyrite and uraninite in rocks younger than 2 billion years.
1 billion years ago; increase in the size of continental shelves
2.2 billion years ago; increase in the size of continental shelves
2.2 billion years ago; decrease in the size of continental shelves
1 billion years ago; decrease in the size of continental shelves
What is the general evolutionary pattern displayed by Neoproterozoic trace fossils?
The oldest trace fossils are simple tubes and become increasingly complex and varied up toward and into the Neoproterozoic, representing the evolutionary diversification of mobile animals in the world's oceans.
The oldest trace fossils are simple tubes and become increasingly complex and rare up toward and into the Cambrian, representing the evolutionary diversification of mobile animals in the world's oceans.
The oldest trace fossils are complex tubes and varied and become increasingly simple up toward and into the Cambrian System, representing the evolutionary diversification of mobile animals in the world's oceans.
The oldest trace fossils are simple tubes and become increasingly complex and varied up toward and into the Cambrian System, representing the evolutionary diversification of mobile animals in the world's oceans.
Which biologic change did not take place in the Proterozoic Eon before a billion years ago?
Stromatolites became abundant about 2 billion years ago, and their success at this time may have resulted from the growth of continental shelves.
Eukaryotes evolved through the ingestion of one kind of bacterial cell by another.
Trace fossils of the first metazoans are found in shallow marine deposits 2 billion years ago.
Fossils of multicellular eukaryotic algae occur in rocks about 2.1 billion years old.
Which is not evidence that oxygen began to build up in the atmosphere roughly 2.3 billion years ago?
The disappearance of banded iron formations about 2 billion years ago.
The lack of oxygen isotopes in sedimentary rocks before 2 billion years ago.
The appearance of red beds and highly oxidized soils first appear about 2 billion years ago.
Rarity of the easily oxidized minerals pyrite and uraninite in rocks younger than 2 billion years.
Explanation / Answer
Stromatolites starts increasing in the archean but vast increase occurs in the proterozic eon, which means approximately 2.5 billion years ago, around 176 different forms of stromatolites are formed during this eon. Geologically this eon having expansive continental shelves, which provided more habitat for stromatolites to populate.answer; 2.2 billion years ago,increase in the size of continental shelves.
Neoproterozoic era, most of the continental crust amalgamated into one super continent called rodinia and it was the first green continent because the ocean surrounded it also witnessed the diversification of eukaryotic life forms. answer; the oldest trace fossils are simple and increasingly complex and varied uo toward and into the neoproterozoic, representing the evolutionary diversification of mobile animals in the world oceans.
stromatolites become abundant about 2 billion years ago and their success may resulted in the growth of continental shelves.
The appearance of red beds and highly oxidized soils first appear about 2 billion years ago.