Which source is most relevant to research on a trip to Mars? Cite the page and paragraph number from the source as you provide the evidence to support your choice.

Which of the following sentences refers to a conflict between characters in "two kinds"?

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.

Match each type of troublesome language with its correct description