Scientists believe that differences in_
a. density
b. magnetism
cause hot, plastic-like rock in the asthenosphere to rise toward earth's surface.
c. weight
d. composition

what are the two models

explanation:

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".