Discussion board 4
Dinosaur Extinction, what caused it ? Contrast tow Hypotheses
There are two main hypotheses about dinosaur extinction
The “intrinsic gradualists”
The “extrinsic catastrophists”
Read these two links and decide what hypothesis you agree more
https://ucmp.berkeley.edu/diapsids/extinctheory.html
https://newscenter.lbl.gov/2010/03/09/alvarez-theory-on-dinosau