The first sentence about Siamese cats is correct because the hypens are correctly placed where you pause when reading. The other answers have misplaced the hypens and they aren't in the appropriate place for pausing.
Okay first off a hypothesis is YOUR opinion on a subject based on the observations YOU'VE made.
But mine is that our bodies are relatively new because as a race of people we are constantly evolving over periods of time.
Answer:i- wdym my brain cells this is not enough information-
Explanation: