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The structure of the tooth that makes up the largest part is called dentin.

The hardest structure of the tooth is dentin.

Mandibular central incisors are the smallest tooth in the mouth. 

The maxillary second molar has 4 cusps.

Mandibular central incisors are smaller than the laterals. 

Which of the two rocks below cooled more slowly from a magma?

Which of the following statements about Mount Vesuvius is false?

A rock that consists of quartz, potassium feldspar, sodium-rich plagioclase feldspar, biotite, muscovite, and amphibole would be best classified as a

What kind of igneous rock is shown in the image below?

Which of the following statements about Mount St. Helens is false?