The crust is the outer portion of the earth's
a. lithosphere
b. asthenosphere
c. mantle
d. exosphere

Find the area of the shaded region.

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

Identify the capital city of china at the time of the japanese invasion in 1937.japanese invasion of china, 1931-1937manchuria +beijing *chinananjing *shangai