Jewelers ____ a high value on emeralds of good quality. Emeralds ____ a rarer find than diamonds. An emerald ____ a special type of the mineral beryl. Geologists ____ the minerals that make up all precious stones. Geology also ____ the study of Earth's landforms and surface features. You ____ these features wherever you look in nature. A volcano ____ some specialized scientists called volcanologists. Magma ____ molten rock contained within the earth. When it comes to the surface, magma ____ lava. I ____ stones and minerals more than land features.

Subject + verb agreement 2

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