What is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ.

Why does black lung aka arthur morgan let only jhon and abigail go and not sadie in the last chapter

1. in "the legend of sleepy hollow," how does his habit of reading frightening tales in the afternoon affect ichabod crane? a. it makes him fall asleep next to the brook by his schoolhouse. b. it makes him think about creating scary stories of his own. c. it makes him nervous and fearful at night. d. it makes him that there is no danger in sleepy hollow. 2. in "the legend of sleepy hollow," how does brom bones feel when he sees ichabod crane dancing with katrina van tassel at the party? a. relieved b. bored c. confused d. jealous 3. in "the legend of sleepy hollow," what happens to ichabod crane after he leaves the party? a. he is challenged to a duel by brom bones. b. he is fired from his job and asked to leave sleepy hollow. c. he is married to katrina van tassel and they live happily ever after. d. he is chased by someone he believes to be the headless horseman. 4. how do the villagers react to rip van winkle when he first returns to town after disappearing for 20 years? a. they are kind to him. b. they ignore him. c. they are suspicious of him. d. they celebrate him as a hero. 5. which best describes rip van winkle? a. he's smart, funny, and generous, but he's also spiteful. b. he's sweet, romantic, and handsome, but he's also impatient. c. he's simple, good-natured, and well-liked, but he's also lazy. d. he's old, wise, and friendly, but he also has a short temper 6. which best describes "rip van winkle"? a. it is an american epic. b. it is a true story. c. it is a ballad. d. it is an american legend. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Consider the title and souce of the following articles. which one is most likely to exhibit a bias? (a) how to roast beef," by the food editor of a magazine (b) americans experiencing greater fatigue than previous generations, " by a harvard researcher (c) "americans' worsening eyesight not related to computer screen usage," by the public relations director of a major computer manufacturer (d) "sharing the burden: a history of cooperation," by a college professor