How the consequences of injuries of the heart and spinal cord similar?

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Why do mountaineers become breathless as they reach high altitudes

Which factor affects the force of gravity between objects? check all that apply. direction distance mass shape time