Carbon dioxide levels in the blood and cerebrospinal fluid affect blood ph. this enables the organism to sense a disturbance in gas levels as a. the brain directly measures and monitors oxygen levels and causes breathing changes accordingly. b. the brain alters the ph of the cerebrospinal fluid to force the animal to retain more or less carbon dioxide. c. the medulla oblongata, which is in contact with cerebrospinal fluid, monitors ph and uses this measure to control breathing. d. stretch receptors in the lungs cause the medulla oblongata to speed up or slow breathing.

Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.

Clues to ecological principles are given in numerous passages of the bible. a bible study of ecology actually opens the doors to better understanding of god's love and concern for the earth. use a concordance to locate bible passages associated with words concerning our stewardship of the earth. you may use a dictionary to find synonyms for these words: dominion replenish subdue judgment stewardship find each of the passages using these words related to principles of ecology. list all passages by quote, book, chapter, and verse under each word. use your own interpretation to rewrite what you think each verse is saying. after your discussion of each of these words, ask one other person to explain his understanding of the word and a related verse without any hints. summarize what he tells you. a concluding paragraph for each of the words should be written noting similarities and differences between your interpretation and that of each person consulted.

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale