Discuss the differences between contact and regional metamorphism
What will be an ideal response?
Answer: Contact metamorphism occurs when a rock is intruded by magma. The heat alters the form of the rock while remaining a solid, causing a metamorphic reaction. Regional metamorphism occurs during mountain building events when large quantities of rock are subjected to intense pressure and high temperatures.
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The following figure shows an overlay (Intersect) operation. "A" represents the input (polygon) layer with ID values from 1 to 4; "B" represents the intersect (polygon) layer with the ID values of 10 and 11; and "C" is a graphic representation of the overlay operation.
How many records in the output will have the ID value of 3 from the input layer?
What will be an ideal response?
Robert Constanza and his colleagues have shown that ________
A) the value of ecosystem services is more than $48 trillion in 2013 dollars B) ecosystems services cannot be assigned monetary values because they are external C) ecosystem services are valued at less than 0.5% of the U.S. GDP D) nutrient cycling is the least valuable of ecosystem services E) NAFTA has had environmental benefits worth $2.7 billion in 2011
A convective _______________ of heat draws in new air from all sides and fans flames
Fill in the blank with correct word.
The depth to which a bivalve can bury itself depends on the ________
A) composition of the sediment B) length of its siphon C) oxygen content of the sediment D) turbidity of the surface water E) wave frequency and water velocity