“the global reef crisis does not necessarily mean extinction for coral species.
“the global reef crisis does not necessarily mean extinction for coral species.
cretaceous–paleogene extinction event:0
the cretaceous–paleogene (k–pg) extinction event, also known as the cretaceous–tertiary (k–t) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on earth, approximately 66 million years ago.