CFCs already in the atmosphere will last for many more years.
According to the scale, an average person would posses the mean of 100 IQ <span>and standard deviation of 15. If to be a member of mensa one should have </span><span>an iq at least 2.5 standard deviations above average, the minimum iq should be:
</span>
2.5 = (x-100)/15
x = 137.5 >>>>> Less than 1% population belong to this IQ group or higher.
A is your answer hope this helps
DONT PRESS THAT LINK IVE SEEN IT EVERYWHERE
