Comma and Relative Clause Review

A nonrestrictive clause needs commas. 

• True
• False

A restrictive clause needs commas. 

• True
• False

Identify the clause:
The soft cartilage that makes up sharks' skeletons dissolves over time. 

• Nonrestrictive
• Restrictive

Identify the clause:
The only part of a shark that lasts for millions of years is its teeth!

• Nonrestrictive
• Restrictive

Identify the clause:
Recently, scientists found the first fossils of Gigantosaurus, which means "monstrous lizard."

• Nonrestrictive
• Restrictive

Identify the clause:
Gigantosaurus, which lived in South America, was even bigger than Tyrannosaurus Rex. 

• Nonrestrictive
• Restrictive

Identify the clause: 
Rancho La Brea Tar Pit and Dinosaur National Monument are two places that have a lot of dinosaur fossils. 

• Nonrestrictive
• Restrictive

Identify the clause:
Many insects become fossilized when they get stuck in amber. 

• Nonrestrictive
• Restrictive

Identify the clause:
David Shiffler, who was born in 1992, is already a famous fossil finder. 

• Nonrestrictive
• Restrictive

Identify the clause:
On a camping trip when he was three, David found something that he thought was a dinosaur egg. 

• Restrictive
• Nonrestrictive