Why do pegmatite mineral crystals grow so large? What will be an ideal response?
The water-rich magma inhibits the formation of nuclei, but allows ions to move easily to those nuclei
that do form, so large crystals can result.
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Organic farming is more sustainable however the food produced costs more than that produced by industrialized agriculture. How can you justify the increased cost of organic food?
What will be an ideal response?
Why is it unlikely that many new hydroelectric dams will be built in the U.S. in the future? What will be an ideal response?
Why do we know that the geothermal gradient near the surface cannot continue very deeply into
Earth? What will be an ideal response?
International flows of the production factors can help to reduce imbalances in the distribution of natural resources
Indicate whether the statement is true or false