Answer:
No it is not a physics because in this there is about classification of element so it is in chemistry that's why it is not physics.
Objects have mechanical energyif they are in motion and/or if they are at some position relative to a zero potential energy position (for example, a brick held at a vertical position above the ground or zero height position). A moving car possesses mechanical energydue to its motion (kineticenergy).
Answer:
It is important to all living things on land
Answer:
atom are very tiny partical
