Answer:
Lava is rock that has undergone a physical change and has liquefied. What is known about this change? The lava gained mass
Explanation:
Your question is badly written. unless you're looking for the avagrados number than its 6 x 10^23 and it means that for every one mole there that number.
Answer:
Digestive system
Explanation:
This is the only organ system listed
The graph is showing us the tide height in feet in the left side and the hight up and down.