https://padlet.com/kstrobel2/6eie9pwfsya How well do you know the history of the Earth? Do you know if dinosaurs roamed the Earth at the same time as mammals? This exercise will test your prior knowledge about the history of life on Earth. en-us 2020-02-07 19:42:38 UTC 2020-02-14 02:00:29 UTC hello@padlet.com