Please watch the following video:https://www.hhmi.org/biointeractive/day-mesozoic-died (Links to an external site.)answer the following questions:1) what is the KT boundary?2) which element is enriched in the KT boundary?3) which organism were studied to specifically show that something big had happened?4) how big was the asteroid?5) where was the crater found?6) which animals survived and why?.