What are the building blocks of matter from smallest to largest, atom, electron, element, neutron, nucleus and proton, please it’s urgent !

Can you think of a way a rock unit with an older fossil could be above a rock until with a younger fossil? describe the scenario.

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

What is meant by the statement" the melting poin of glycerine is 13 degree celsius