Answer:
The Mitochondria generates most of the chemical energy needed to power the cell's biochemical reactions.
Explanation:
I studied the body organisms 2 years ago.
The density value 3.291 g/ml (gram / milliliter) in words is "three point two nine one g/ml (gram / milliliter)".
=)
Answer:The mass of ball B is 10 kg.
Explanation;
Mass of ball A = 
Velocity of the ball A before collision:
Velocity of ball A after collision=
Mass of ball B= 
Velocity of the ball B before collision:
Velocity of ball B after collision=



The mass of ball B is 10 kg.
Water is more dense then air so it sorta holds the rock as it sinks