How many of the world’s 20 largest cities are located in western europe?
a. none
b. one
c. two
d. four

Describe the most likely weather conditions at indiana / ohio boarder

Which of the following types of tourist are best to bring money to the local southeast asian communities

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