What are some of the explanations offered to account for the rise in IQ scores in the developed world?

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

answer; how far out of place which the object finished relative to the starting location;