Polyvinyl chloride, or pvc, is used in most water-carrying pipes in the united states. known for their resistance to the corrosion that can be caused by water, pvc pipes are more durable than the metal pipes of old. as useful as pvc is, it may be surprising that it was accidentally discovered in 1835 by henri victor regnault, who observed a mysterious white solid plastic forming inside some test tubes that were left exposed to sunlight in his lab. it can be inferred from the passage that metal pipes:
a. are used more than pvc pipes outside of the united states
b. are more expensive than pvc pipes
c. are more likely to corrode than pvc pipes
d. are no longer used in the united states

Ineed writing a persuasive essay about why parents should vaccinate their kids

In this excerpt from act 1 scene v of macbeth what does lady macbeth imply about macbeth

Lesson 10: crossing borders: unit test “borders” 1.what does the mother’s refusal to state her nationality as canadian or american signify? a)that she resents governmental interference with her life b)that she identifies with neither country c)that she comes from somewhere else d)that she is stubborn and proud 4.the author’s chosen visual images,sensory details, and dialogue all convey a particular feeling in “delfino ii: diez in the desert.” thus feeling is known as: a)tone b)mood c)pathos 5.compare and contrast the poem “mexicans begin jogging” and the story “delfino ii: diez in the desert.” a)both are written about similar themes (immigration), but the story has a more serious mood than the poem b)both focus on mexican immigrants, but the story has a lighter tone than the poem. c)both main characters are afraid: diez is afraid of being caught smuggling people over the border, and soto is afraid of being caught working illegally. d)the tone in both selections is similar, but the subject matter differs slightly. 15. the tone of the poem “ka’ba” versus the tone of the poem “harlem ii” might be described as a)grateful vs ungrateful b)certain vs doubtful c) hurtful vs defeated d)safe vs dangerous