Human activities have sped up the process of erosion by an estimated 10 to 40 times globally. blank farmers have been encouraged to take steps to reduce erosion.

a. before
b. since
c. consequently
d. because

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.