Ethnic distribution, as shown on this map, may be the result of all of the following EXCEPT

redlining
filtering
racial steering
ghettoization
blockbusting

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

What is the approximate chemical composition of the solar nebula?

If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?