All of the following are part of the study of geography except which one? A the study of physical features of the earth
B the study of human activity
C the study of the climate of the earth
D the study of the oceans

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed