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

Question I was asked: When a thin slice from an onion is viewed through a microscope, lots of little box-like shapes are seen. These shapes are most likely

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

Question I was asked: In which pair of elements are both metalloids?

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

Question I was asked:
When a large oak tree is cut down in a forest, it leaves a gap in the forest canopy which allows smaller trees to quickly grow in the available sunlight. Which interaction is best represented among the smaller trees?