instruction:
Given a scientific passage and an answer, generate a question for the given answer.
question:
Passage: An anticline is a fold that arches upward. The rocks dip away from the center of the fold ( Figure below ). The oldest rocks are found at the center of an anticline. The youngest rocks are draped over them at the top of the structure. When upward folding rocks form a circular structure, that structure is called a dome . If the top of the dome is eroded off, the oldest rocks are exposed at the center. Answer: anticline
answer:
What is the term for a fold that arches upward?

question:
Passage: Runoff is likely to cause more erosion if the land is bare. Plants help hold the soil in place. The runoff water in Figure below is brown because it eroded soil from a bare, sloping field. Can you find evidence of erosion by runoff where you live? What should you look for?. Answer: erosion
answer:
Runoff is likely to cause more what if the land is bare?

question:
Passage: Figure 31.3 Cellulose, the main structural component of the plant cell wall, makes up over thirty percent of plant matter. It is the most abundant organic compound on earth. Plants are able to make their own cellulose, but need carbon from the soil to do so. Answer: cell wall
answer:
Cellulose is the main structural component of what part of the plant cell, and makes up over thirty percent of plant matter?