The ability to reproduce is essential for a species, but not for an individual. There are some people that can't reproduce, but they're still alive!
The loudness of sound refer to how loud or soft a sound seems to a listener
The law of conservation of energy<span>, a fundamental concept of physics, states that the total amount of </span>energy<span> remains constant in an isolated system. It implies that </span>energy<span> can neither be created nor destroyed, but can be change from one form to another.</span>
Ur answer is 3 and i'm sure of it
