Which of the following objects owes its shape primarily to the gravitational force?

select one:
a. the sun
b. an electron orbital
c. a human being
d. an iron nucleus
e. an iron atom

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential