Geology homework help

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  • Look at video for each question to answer, I will check the time point on movie to see if the answer is accurate so please don’t put wrong stuff.
     
    Q1: https://www.youtube.com/watch?v=pENq1ml2haA&feature=youtu.be
    What element from the volcanic eruptions combines with the precipitation?  What kind of acid is formed in this combination?  At which time point in the movie was this response given?
     
    Q2: https://www.youtube.com/watch?v=ldLBoErAhz4&feature=youtu.be
    Arctic sediments that date back to the early Eocene, 49 million years ago, have been found to contain huge swaths of fossilized ferns know as what?  What time in the movie was this information given?
     
    Q3: https://www.youtube.com/watch?v=ZoHO3fAj_78&feature=youtu.be
    The K-Pg Extinction is named after the German abbreviation for  ______  and _______ .  What time in the movie was this information given?