How does the average depth of the oceans compare to the average elevation of the continents?

What type of coastline is commonly found along the western side of the america’s

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

4. what are three safety guidelines every hunter should follow when handling a firearm?