The following are periods of the Paleozoic era, except:
Answer

Vendian

Cambrian

Permian

Ordovician

*I choose Vendian

Question

The following are periods of the Paleozoic era, except:
Answer
		
Vendian
		
Cambrian
		
Permian
		
Ordovician

*I choose Vendian

anonymous · Answer

@sikinder

anonymous · Answer

Vendian

anonymous · Answer

The largest, most devastating mass extinction in Earth’s history occurred:
Answer
		
at the beginning of the Permian
		
in the middle of the Cambrian
		
at the end of the Permian
		
at the end of the Ordovician

*at the end of the Permian

anonymous · Answer

at the end of the Permian

anonymous · Answer

Which of these animal groups was NOT present by the end of the Cambrian?
Answer
		
bryozoans
		
arthropods
		
chordates
		
mollusks

*bryozoans

anonymous · Answer

yes ur right its bryozoans

anonymous · Answer

The great coal deposits of the Northern Hemisphere formed during the:
Answer
		
Permian
		
Cambrian
		
Devonian
		
Carboniferous

*The last one

anonymous · Answer

Carboniferous

anonymous · Answer

The first forests of trees appeared during the:
Answer
		
Carboniferous
		
Ordovician
		
Permian
		
Devonian

*The last one too

anonymous · Answer

The first forests of trees appeared during the: 
Devonian

anonymous · Answer

Crinoids are which type of organism?
Answer
		
arthropods
		
brachiopods
		
echinoderms
		
mollusks

*echinoderms

anonymous · Answer

Crinoids are which type of organism 
echinoderms

anonymous · Answer

Flying insects evolved by at least the:
Answer
		
Carboniferous
		
Ordovician
		
Permian
		
Silurian
*Carboniferous

anonymous · Answer

ask me ur questios fast @KittyT

anonymous · Answer

Flying insects evolved by at least the 
Permian

anonymous · Answer

Ok...But openstudy is so laggy :(

anonymous · Answer

The first land vertebrates appeared in the:
Answer
		
Carboniferous
		
Cambrian
		
Permian
		
Devonian

*Devonian

anonymous · Answer

Human beings were present on Earth from the beginning of the Paleozoic. 
Answer  True   False
*False

anonymous · Answer

A mass extinction occurred near the end of the Devonian Period. 
Answer  True   False
*true

anonymous · Answer

The cause of the Permian mass extinction is well understood. 
Answer  True   False
*True

anonymous · Answer

Yep...that's all...

anonymous · Answer

The first land vertebrates appeared in the:Carboniferous

anonymous · Answer

Human beings were present on Earth from the beginning of the Paleozoic. its false

anonymous · Answer

A mass extinction occurred near the end of the Devonian Period. its false

anonymous · Answer

The cause of the Permian mass extinction is well understood. its false

anonymous · Answer

@KittyT  am i right