Pressure on the inside of the balloon was greater than the pressure on the outside of the balloon so it pushed out until the pressures equalized.
Try looking at the question a little bit harder.
Answer:
when there is a group of organs that work together they are called the organ system
Explanation:
<span>6.2×6.022×<span>1023</span>=3.733×<span>1024</span></span><span> atoms.</span>