Russia's eastern cities are less populated than its western cities because they have harsh climates.

true or false

The european union was formally established in

What factors influenced brazil's current and future economic strength?

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