What is Earth's greatest distance from the sun?
a. apogee
b. perigee
c. aphelion
d. perihelion
e. periapsis
c
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What are the required inputs for spatial interpolation?
What will be an ideal response?
Which type of analysis is performed by industrial ecologists when they examine a product from its beginning as a raw material until its disposal?
A. full-term analysis B. life-cycle analysis C. reverse-engineering analysis D. disposal-tracking analysis
To an ethologist, graffiti in an high-density urban area is least likely to be explained as a(n)
A) response to overcrowding. B) act of vandalism. C) expression of identity. D) claim to territory.
Why does magma viscosity vary with silica content?
A) There is no correlation between silica content and magma viscosity. B) Increasing silica content increases the amount of water a magma can dissolve and water decreases magma viscosity, so increasing silica content decreases magma viscosity. C) Increasing silica increases a tendency for silica bonds to link up in networks, acting like a polymerization of the magma. D) Increasing silica content lowers the melting temperature and since increasing the temperature of a magma decreases viscosity increasing silica content increases viscosity.