School administrators, lawyers, and doctors fall under which distinct industry category?

a.) primary

b.) secondary

c.) tertiary

d.) quaternary

If x ≤ 25, which could be the perimeter of this rectangle? a) 100 in b) 155 in c) 225 in d) 750 in e) 1500 in

What is the approximate chemical composition of the solar nebula?

Which of the following mountain ranges is home to the largest mountain peak in europe? a. the carpathian mountains b. the caucasus mountains c. the balkan mountains d. the ural mountains select the best answer from the choices provided a b c d