Which of the following is probably the most useful to use in the study of geography?

a) timelines
b) maps
c) calculator
d) compass

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

Which of the following statements best explains why there tends to be a greater number of large cities in southern africa than the east africa

Why are all maps distorted? when reading a map, why is it important to check the legend? what is the difference between longitude and latitude? identify the meridian at 0° longitude and the parallel at 0° latitude.