Which is more likely to get a heads when flipping just a penny or to get a heads on both a penny and a nickel when you flip them together

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

Select the word from the list that best fits the definition a system made of 25 satellites

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time