Most landfills contain very little air and moisture, which many microorganisms need to survive. how do you think these conditions affect biodegradable plastic buried in a landfill?

Since substances break down much faster under aerobic conditions, as oxygen helps break the molecules apart, in a process called oxidation, biodegradation that actually takes place does so slowly that effects may not be visible in decades after a product was buried, if even then.

v=ir = 3x15 =45 v

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it