A dinosaur egg is a fossil. So is petrified wood.
'So' is a conjunction that depicts comparison between subjects in a sentence in this case. The use of 'so' in this sentence is incorrect because when comparing two subjects, which in this case are dinosaur egg and petrified wood, they should be in one sentence idea. When using the punctuation mark period '.' it ends the idea of the sentence in the first sentence given.
Pre-Columbian = pre-1492
Age of Exploration = 15th century - 18th century
Colonial Era = 16th century - 20th century
Revolutionary Period = 1764-1789
Answer: Change there to their.
Hopefully i’m right i think it’s the third one
