If (4, -5) is a coordinate on a 2-dimensional graph, what is the reference point?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Stage in which a star’s outer layers have started to cool and grow outward?

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin