An igneous rock is found on the ground and has no identifiable crystals. what is the most likely origin of this rock? molten material that cooled slowlymolten material that cooled quicklyrock that was eroded by surrounding rocksrock that was exposed to extreme pressure

Aperson travels 35 km in 0.4hrs, followed by 53 km in 0.6 hr. what is the average speed

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

Which list is in order from simplest to most complex? a bacteria - virus - plant - protist b protist - bacteria - virus - plant c virus - bacteria - plant - protist d virus - bacteria - protist - plant