by 1800 the world population was 1 billion people civilizations existed for thousands of years prior to 1800 based on your knowledge of world history why do you supposed to take the world population to reach a billion by 1800

What part did glaciers play in forming the great lakes?

How are people today protected from wildfires like the large wildfires like the great fire of 1910are people today protected from large wildfires like the great fire of 1910? plz have the answer. this is important. you

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