20 what is the best description of the paths of s waves and p waves? a. s waves travel through earth's interior. p waves travel along the surface of earth's crust. b. s waves travel through solids, liquids, and gasses. p waves travel through solids or very dense, glassy liquids. c. s waves travel through solids or very dense, glassy liquids. p waves travel through solids, liquids, and gasses. d. s waves travel along the surface of earth's crust. p waves travel through earth's interior.

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection