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

Question I was asked: Which invention will best help people travel quickly to far away places?

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

Question I was asked: What abiotic factor would most likely signal a population of birds that it is time to migrate from north to south?

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

Question I was asked:
Which property of water can cause a rock to break apart?