Genetic variability is the most important result of sexual reproduction or asexual reproduction?

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?