Problem: Many compound materials exhibit polymorphism, that is they can exist in different structures called polymorphs. Silicon carbide (SiC) is unique in this regard as more than 250 polymorphs of silicon carbide had been identified by 2006, with some of them having a lattice constant as long as 301.5 nm, about one thousand times the usual SiC lattice spacings.

Based on the paragraph above can we conclude that "Many unique compound materials exhibit polymorphism"?

A: It's impossible to say


Problem: How to diagnose hamster dental problems<br>Look for signs your hamster isn't eating. Overgrown teeth make it difficult for the hamster to eat. This is because the long teeth force the jaws permanently apart, the long teeth grow into the roof of the mouth or pierce the lips, or the teeth develop sharp jagged edges that make eating painful.

Based on the paragraph above can we conclude that "Tiny teeth make it difficult for hamsters to eat."?

A: No


Problem: The Car<br>Taryn was out for a walk. She was trying to reduce her carbon footprint. She started walking instead of driving. Soon, she realized that she didn't need her car anymore. She sold it to her neighbor and started walking everywhere.

Based on the paragraph above can we conclude that "The neighbor used the car after purchasing it"?

A:
It's impossible to say