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|Patterns of Earth and Sky|
|Chapter 1: Why don’t we see a lot of stars in the daytime?|
|Chapter 2: Why is the sun up sometimes, but not other times?|
|Chapter 3: Why do we see different stars at different times of year?|
|Chapter 4: How can we investigate why we see different stars on different nights?|
|Chapter 1: Why did the food coloring separate into different dyes?|
|Chapter 2: Why do some salad dressings have sediments, and others do not?|
|Chapter 3: Why can salad-dressing ingredients separate again after being mixed?|
|The Earth System|
|Chapter 1: Why is East Ferris running out of water while West Ferris is not?|
|Chapter 2: Why does more rain form over West Ferris than East Ferris?|
|Chapter 3: Why is more water vapor getting cold over West Ferris than East Ferris?|
|Chapter 4: Why is there more water vapor high up over West Ferris than East Ferris?|
|Chapter 5: How can East Ferris turn wastewater into clean freshwater?|
|Chapter 1: Why aren’t the jaguars and sloths growing and thriving?|
|Chapter 2: Why aren’t the cecropia trees growing and thriving?|
|Chapter 3: Why aren’t the cecropia trees growing and thriving in the soil?|