Why is the example of DDT included in the unit?
to show that solutions have unintended consequences
to illustrate why pesticides should not be used by farmers
to promote organic farming methods
to explain the chemical elements of common pesticides

Complete the sentence. when trying to determine the meaning of an unfamiliar word, you should first replace the unfamiliar word with a synonym that you identified based on the context clues. remove the unfamiliar word from the sentence. think of an antonym for the unfamiliar word. look for context clues that indicate the word's meaning.

Which of these sentences would best express the main idea of a speech arguing that people should participate in a charity softball tournament? a) softball is a great way to get some much-needed exercise. eliminate b) the money raised by the tournament will local animal shelters. c) the tournament is a fun way to spend time with friends while a worthy cause. d) even if you don't have any softball experience, you can form a team and participate.

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.