What causes differences in air pressure around the Earth?

The mini-refrigerator fire was most likely caused by what type of wiring?

How to calculate voltage drop in a series circuit

Ascientist plants two rows of corn for experimentation.she put fertilizer on row 1 but does not put fertilizer on row 2 both rows receive the same amount of water and light intensity she checks the growth of the corn over 5 months what is the constant in this experiment