Why is oxygen important for all body cells?
a) it is involved in sugar production
b) it reduces the amount of urea in blood.
c) it increases the formation of lactic acid.
d) it is involved in energy producing cycles.

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