Jacob was reading a book about fossils. he read that fish fossils are sometimes found at the top of high mountains. what can jacob infer about the mountains? a) they are now underwater. b) they were once underwater. c) they moved across the land. d) fish used to live on mountains.

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

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

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.