Answer:
The ping pong ball is hollow.
Explanation:
Since a ping pong ball, unlike the golf ball, is only filled with air, it is less dense. Air is notably LESS dense than solids, which is what comprises the inside of a golf ball.
Answer:
The main purpose of the circulatory system is to transport blood, oxygen, nutrients and hormones to and from different cells and tissues throughout the body.
Explanation:
This system works hand-in-hand with the respiratory system to facilitate the exchange of oxygen and carbon dioxide within the blood per the alveoli in the lungs.
gravit and air when it falls think of a feather and how it sways down to the ground
<span>They do not have a backbone.They are multi-cellular. They have no cell walls, like all other animals.<span>They reproduce by two reproductive cells, or gametes, coming together to produce a new organism of their species.</span></span>
