Two parallel lines lines are crossed by a transversal.
what is the value of x?

x=12
x=14
x=22
x=24

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection