What is the color of the stars with the lowest surface temp?

Why were the results whit just water so much different than the trials with the detergent ?

10 points a population of mice have tails. over time those mice with either really short tails or really long tails have a higher rate of survival. this will probably lead to what type of selection? a. disruptiveb. directionalc. stabilizingd. evological

Can you answer all these questions?