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

Question I was asked: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change?

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

Question I was asked: Some students were investigating the relationship between position, time, and speed. The students marked the initial position of a toy car. The students set the car into motion and marked the position of the car each second. Which of these are most appropriate for recording and analyzing the students' data?

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

Question I was asked:
Plants need iron to grow. What parts of plants take in iron?