Where does Earth receive its energy? A) its core
B) the sun
C) its atmosphere
D) the hydrosphere

Each pair of clay balls represents to planetesimals if each plane test molluscum pound of the same material and is separated by the same distance which pair experiences the greatest gravitational attraction

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.