What are some advantages of gravitational energy

Explanation: Gravity keeps our bones and bodily muscles from not working, things like dams can be one example of gravitational energy being used for our benefits. Without gravitational energy, our earth most likely won't stay in it's own atmosphere. Another example is like a car on the top of the hill, or a snow pack (Where an avalanche might happen)

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue