Forensic scientists studying the human body at crime scenes need to be ready to face

I believe the answer is "the unpleasantness of dead and decaying flesh". :)

wouldnt it be the scientific method?

explanation:

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.