In this assignment, you will continue to learn how to write a document-based question (DBQ) essay. If you have worked on part 1, you will add purpose to your graphic organizer by examining a set of six
documents. Then, you will use historical context to revise your thesis, and add outside historical evidence
to write an introductory paragraph.
If you did not work on part 1, you will deconstruct a prompt and complete a graphic organizer by
examining a set of documents to determine their point of view, intended audience, historical context, and
purpose. Then, you will use historical context to revise your thesis, and add outside historical evidence to
write an introductory paragraph.

If you are talking about typical sand you would find at the beach or in a river bed here on earth, there are some differences. i would say the first biggest difference is in composition and mineral make up. although the moon is largely made of the same materials as earth’s mantle and surface, the moon experiences very little weathering (no liquid water and virtually no atmosphere). “earth” sand is typically composed mostly of quartz grains. this is because quartz is highly resistant to both physical and chemical weathering. most of the other minerals originally with the quartz are broken down into fine clay and carried away, chemically eroded/ dissolved, or some combination of the two. this usually leaves only the quartz behind, and so most of the time when you see/think of sand, you are talking about quartz. without these weathering mechanisms on the moon, the “sand” (which is likely more silt or clay sized grains anyways) would consist of mostly other minerals like anorthosite, olivine, and proxene.

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  the correct answer is : binding price ceilings encourage the formation of a black market

Answerbiological perspective

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .