Which of the following is a distinguishing difference between rocks and minerals?
A) Minerals are made of rocks combined in different combinations.
B) Crystals are a type of rock and granite is a type of mineral.
C) Minerals are aggregates of different rocks and elements.
D) Minerals have specific chemical compositions, but rocks do not.

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397