They give us more information about what they learned.
D. Greenhouse gas feddback
I'm not for sure but I believe this is the answer sorry if I get it wrong in advance
I think the answer is B. Geographers use different kinds of maps, depending on the subject they are studying. <span />
I believe the correct answer from the choices listed above is option D. The difference between a seismograph and seismogram is that a seismograph is the instrument that detects and records volcanic activity, while a seismogram is the written record of that activity. Hope this answers the question.