the constant difference of length between a rod of aluminium ( coeficient of linear expansion is 24×10^_6) and a rod of brass (coeficient of linear expansion is 19×10^_6) is 8cm all temperatures equal. calculate the length of each rod

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.

Since the pully is a simple machine so the mechanical advantage is a 1

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.