Evolution, on the other hand, is something that occurs in the tough wilderness environment, where every day is a struggle just to survive.
(Evolution; is; something that occurs in the tough wilderness environment,) (something; occurs; L:in the tough wilderness environment) (every day; is; a struggle just to survive; L:the tough wilderness environment)
Evolution something every day
is occurs is
something that occurs in the tough wilderness environment,
L:in the tough wilderness environment
a struggle just to survive L:the tough wilderness environment