Which organism is the Least related to humans? Explain

frog

Explanation:

because as a small tadpole, it breathes underwater and is more like an underwater creature than a land animal. Also it has more differences than alikeness to humans and has 67 different amnio acid differences

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.