Describe the beginning of operations of Earth's systems and when that occurred. What will be an ideal response?
Earth formed around 4.6 billion years ago, but it was not as we see it today. Differentiation into core
and mantle happened millions of years after formation, and no crust is now seen that is older than 4.0
billion years. After differentiation, plate tectonics began, although initially perhaps different from the
way it is today. By 3.5 billion years ago, Earth's systems were fully operative and interacting much as
they do today.
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Which of the following solutions is the most dilute?
A. one liter of water with 1 gram of sugar B. one liter of water with 10 grams of sugar C. one liter of water with 5 grams of sugar D. one liter of water with 2 grams of sugar E. They all have the same volume.
In which part of the area in the Investigation would you most likely find uncontaminated groundwater?
A) North B) East C) South D) West
The intensity and location of monsoon activity is dependent upon the proximity to the geographical equator
Indicate whether the statement is true or false
The mature stage of air-mass thunderstorms
A) is marked by an absence of significant downdrafts. B) occurs before the anvil shape at the top of the cloud has formed. C) sees the end of additional water vapor entering the cloud. D) is marked by the heaviest precipitation.