The second brother Brother because he is much heavier and therefore has more energy to be released hope this helps
True hop i help can you mark me as the branliy
Explanation:
A system can be either closed or open; A closed system is a system that is completely isolated from its environment. An open system is a system that has flows of information, energy, and/or matter between the system and its environment, and which adapts to the exchange.
the second one, any change in a DNA gene or chromosome
