Describe how the elements of natural selection work. Include inherited variation, the potential of a population to produce more offspring than can survive, and a finite supply of environmental resources. How do they result in differential reproductive success?

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explanation:

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.