What does it mean to describe a scientist as skeptical? why is skepticism considered a valuable quality in a scientist?

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?

explanation:

the sun shines white and black light to our planet. the white light has all the colors in it. in our upper atmosphere, we have dust particles and oxygen molecules. the white light meaning all of the colors in a rainbow shines through the upper levels of the atmopshere and the blue light scatters across the entire planet. that is why our sky is blue.