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

Question I was asked: Which is an example of a human-made product?

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

Question I was asked: When a car engine is started, gasoline is mixed with air and burned. Heat, sound, and chemical products are released. As the engine operates, which of these remains constant?

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

Question I was asked:
A student is shown a slide of cells from a species of producer in a food web. The student observes that the cells have chloroplasts. What conclusion about the food web is best supported by these findings?