HELP PLZ! Which is evidence that supports the dynamo theory?

A. Convection occurs in the mantle very slowly.
B. Silicon in a conductive material.
C. Earth's core contains mostly iron and nickel.
D. Iron does not conduct electricity.
Science A p e x

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature

How do living things obtain phosphorus