Answer:
kinetic energy
Explanation:
all moving objects have kinetic energy. when an object is an motion it changes its position by moving in a direction: up,down, forward, or backward
Sound waves travel faster in denser materials and the more dense the material the faster the sound is
If your bike isn't the right size, your legs could be rubbing up against the seat of your bike. The friction can chafe the skin on your legs. If you were to crash your bike, skidding on the ground can cause anywhere from minor scrapes to serious friction burns.
Answer:
B. it is a community of plants,animals and there physical surrounding.
