Previewing "Earth's Changing Climate On page 451, read the title. Do you think climate change is real big deal? Read the "Build Background..." section on page 450. Do you know the answers to some of these questions? Read through the yellow key vocabulary on page 450. How many of these words do you already know? How many headings are in the reading? How many bold terms are in the reading? The graphic illustration on page 452 suggests a cause/effect relationship. Is the blue line causing the red line to increase or Vice versa? How long will it take you to complete this reading and answers the questions successfully?