I just took a test in school today. What question was I asked?

Question I was asked: For many years, people have been curious about the stars. In the past, people have shared what they knew about the stars through stories and drawings. Which pair of tools would be most helpful for people today to gather and share information about stars?

I just took a test in school today. What question was I asked?

Question I was asked: Runoff from farms that use fertilizers is entering a small lake. This will most directly affect the lake by causing

I just took a test in school today. What question was I asked?

Question I was asked:
Plants on hills keep dirt in place during a rain storm. Plant roots grow into the dirt and keep the dirt from moving. Why do roots grow into the dirt?