What is meant by the term host rock?

What will be an ideal response?


Host rock is the surrounding rock that igneous bodies intrude into. It is also called country rock.

Environmental & Atmospheric Sciences

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What is the ratio of the percentage of gasoline consumed in the U.S. (compared to rest of the world) to the U.S. percentage of the world's population?  In other words, take the worldwide % of gas consumed by the U.S. and divide it by the U.S. share (%) of the world's population.

A. ~10:1 B. ~1:1 C. ~5:1 D. ~2:1

Environmental & Atmospheric Sciences

The reason that the white-hot sparks that strike your skin from a 4th-of-July-type sparkler don't harm you is because

A) they have a low temperature. B) the energy per molecule is very low. C) the energy per molecule is high, but the total energy transferred is small.

Environmental & Atmospheric Sciences

Black holes are thought to be abundant, yet they are hard to find. Explain why

What will be an ideal response?

Environmental & Atmospheric Sciences

________ forms from limestone when the calcium in calcite is partially replaced by magnesium.

A. Chert B. Dolomite C. Gypsum D. Quartz E. Halite

Environmental & Atmospheric Sciences