The first planet beyond out solar system was discovered in.
a)1974
b)1983
c)1992
d)2008

Amountain created from tectonic activity would be considered which type of landform ? a) primary landform b) secondary landform

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

On nights when we see the new moon phase, what side of the moon are we seeing?