Rediscovering Biology Great advances have been made in the field of biology in recent decades that will continue to have a major impact on our lives. This course will help new and veteran biology teachers become familiar with current research methods and tools that will lead to new discoveries in the coming decades.
Which Famous Cathedral Collapsed?
Four of the grandest medieval cathedrals are shown -
one of which was not structurally sound and collapsed.
After looking at the photos try to select which cathedral
fell and see if you can determine, from the picture, why
it might have happened.
