What are two major and very useful differences between P- and S-waves? What will be an ideal response?

What factors would influence a firm to locate closer to its inputs rather than closer to its market?

What will be an ideal response?

During the last two million years, there have been at least ____________________ warm-cold cycles. Fill in the blank(s) with the appropriate word(s)

Most sand on beaches, in desert dunes, and in stream and river channels is made up of ____

A)CaCO3 B)NaCl C)SiO2 D)CaSO4 E)2H2O

Isotopes that decay slowly are used to date

A. recent lava flows. B. ancient rock. C. prehistoric cultural sites.