Composite volcano magma contains more silica, SiO 2, than that of a shield volcano and is therefore stickier (more viscous).This stickiness plugs up the volcano, causing pressure to build-up. The result is an explosive, dangerous eruption.omposite volcano magma contains more silica, SiO 2, than that of a shield volcano and is therefore stickier (more viscous).
Historically, in North American banking, the prime rate was the actual interest rate, although this is no longer the case. The prime rate varies little among banks and adjustments are generally made by banks at the same time, although this does not happen frequently. The prime rate is currently 3.25% in the United States and 2.85% in Canada.
The real interest rate is the rate of interest an investor expects to receive after allowing for inflation. It can be described more formally by the Fisher equation, which states that the real interest rate is approximately the nominal interest rate minus the inflation rate.