Pinpoint #914 answer: Books, Cacti, Sea urchins, Vertebrates (by definition), Porcupines (they’re sharp!)

Things with spines

1. Pinpoint #914 clue 1: Books

   Spines of books. Books have a spine, the part that holds the pages together and shows the title on a shelf.

2. Pinpoint #914 clue 2: Cacti

   Spines on cacti. Cacti are covered in sharp spines that protect them from animals and cut water loss.

3. Pinpoint #914 clue 3: Sea urchins

   Spines on sea urchins. Sea urchins are covered in sharp spines that protect them from predators.

4. Pinpoint #914 clue 4: Vertebrates (by definition)

   Spines in vertebrates. Vertebrates are defined by having a spine, or backbone, running along the body.

5. Pinpoint #914 clue 5: Porcupines (they’re sharp!)

   Spines on porcupines. Porcupines are covered in sharp quills, which are a kind of spine.

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