I don't think the water cycle has a beginning or ending because all the water in the world is always in various stages of the cycle. It's kind of like asking if a circle has a beginning or ending. At the very least, I can't think of a specific 'beginning' or 'ending', although I suppose there is an argument to be made that percipitation is the ending and evaporation is the beginning.
Occurs in the mitachondria - D uses energy in sunlight - E does not involve oxygen- A Plants and algae- C Works together to perform a function ( B) Last two I’m not too sure though
