Modern houses have systems to control internal air temperatures in times of very cold or hot weather. In these homes, hot or cool air is pumped into the interior of the house to help keep the temperature comfortable. Based on what you know about how cool and warm air circulates in the atmosphere, what might an engineer need to consider when designing a heating/cooling system for a home in a cooler climate? How might the design differ for a house found in a warmer climate?​

Read the excerpts from part 3 of "an occurrence at owl creek bridge." a rising sheet of water curved over him, fell down upon him, blinded him, strangled him! the cannon had taken a hand in the game. as he shook his head free from the commotion of the smitten water he heard the deflected shot humming through the air ahead, and in an instant it was cracking and smashing the branches in the forest beyond. *** a whiz and rattle of grapeshot among the branches high above his head roused him from his dream. the baffled cannoneer had fired him a random farewell. he sprang to his feet, rushed up the sloping bank, and plunged into the forest. *** as he is about to clasp her he feels a stunning blow upon the back of the neck; a blinding white light blazes all about him with a sound like the shock of a cannon—then all is darkness and silence! what function does the motif of the cannon serve throughout the story? the cannon continually pushes farquhar to continue his journey through his dream and back to reality. the cannon encourages farquhar to investigate whether his escape was a dream or reality. the cannon reminds farquhar that time is subjective and encourages him to move quickly in order to reach his home. the cannon represents farquhar’s romantic dream that he escaped his execution and will return home.

Historical fiction is concerned with depicting historical figures and events in a new light. in this excerpt from arthur conan doyle's "the contest," which two sentences most clearly describe historical elements? policles sprang readily to his feet at the challenge, and the great company making way for him to pass, he found himself a minute later standing in his unkempt garb, with his frayed and weather-beaten harp in his hand, before the expectant crowd. he stood for a moment tightening a string here and slackening another there until his chords rang true. then, amid a murmur of laughter and jeers from the roman benches immediately before him, he began to sing. he had prepared no composition, but he had trained himself to improvise, singing out of his heart for the joy of the music. he told of the land of elis, beloved of jupiter, in which they were gathered that day, of the great bare mountain slopes, of the swift shadows of the clouds, of the winding blue river, of the keen air of the uplands, of the chill of the evenings, and the beauties of earth and sky. it was all simple and childlike, but it went to the hearts of the olympians, for it spoke of the land which they knew and loved. yet when he at last dropped his hand, few of them dared to applaud, and their feeble voices were drowned by a storm of hisses and groans from his opponents. he shrank back in horror from so unusual a reception, and in an instant his blue-clad rival was in his place. if he had sung badly before, his performance now was inconceivable. his screams, his grunts, his discords, and harsh jarring cacophonies were an outrage to the very name of music.

Study the image. study the image. which statements best describe this advertisement? select three options. the evidence and facts appeal to logic. the image appeals to feelings and emotions. the target audience is pet-store owners. the target audience is potential pet owners. it promotes one method of animal adoption. it encourages the use of social media. which statements best describe this advertisement? select three options. the evidence and facts appeal to logic. the image appeals to feelings and emotions. the target audience is pet-store owners. the target audience is potential pet owners. it promotes one method of animal adoption. it encourages the use of social media.