The phrase "has evolved because" is grammatically correct and can certainly be used in written English.
It is commonly used to explain the reason or cause behind something's evolution or development. Example: "The human brain has evolved because of the need to adapt to changing environments and solve complex problems."
This mimicry has evolved because many host species throw eggs not resembling their own out of the nest.
Researchers have just made a strong case that a certain aspect of its behavior has evolved because of human harvesting of corn.
"The moth's hearing has evolved because of predation," said Hannah M. Moir, one of the researchers involved in the study, which was published in the journal Biology Letters.
Maxine Phillips, managing editor of Dissent magazine, who is a member of Judson Memorial Church in Greenwich Village, finds that recounting the year's events around the Thanksgiving table "has evolved because we usually have guests from different faith traditions, or no faith traditions, and have felt uncomfortable even singing a blessing, since they usually didn't know it".
Rollins said the relationship has evolved because of their willingness to trust each other.
There's no easy way to do interviews after the film has come out, when the conversation surrounding it has evolved, because stars are off promoting something else they're working on, often in another country.
Feelings of disgust at certain objects and bodily functions may have evolved because they protected man from disease, but they linger powerfully in modern consciousness.
The doctor suggests that the seizures may have disrupted a part of the brain "whose activity is somehow conducive to religious belief," and that such a receptive region may have evolved because "it's conducive to stability of society".
"A powerful mechanism to increase appetite and decrease metabolism when weight loss occurs is likely to have evolved because our species was subjected to periods of famine, and the threat to survival came from starvation, not overnutrition," he said.
In fact, they assert in "A Natural History of Rape: Biological Bases of Sexual Coercion," that rape "is in its very essence a sexual act" and that the practice may have evolved because it confers an evolutionary advantage.
