Use the two passages below to answer questions 3 and 4.
Passage A
Cicadas are familiar to many Americans due to their buzzing, clicking song. In the eastern part of the United States, during the summer the air echoes with the humming of the cicada, an oval-shaped insect that can reach up to 2.5 inches in length. Cicadas are harmless: they do not sting or bite humans. They emerge from the ground in the summer to mate. Cicadas live underground as juveniles, or nymphs, and shed their skin, or exoskeletons, to take on their adult form. Cicadas are found in Texas, the southeastern United States, the mid-Atlantic, and range up through New York State and southern New England. They also inhabit the Midwest.
Passage B
The sounds of summer in the eastern United States feature the lazy buzzing of the cicada. Did you know that there are actually two kinds of cicadas? Some breeds emerge every year to hum away through the hot summer days. Others spend thirteen or even seventeen years underground as babies, or nymphs, only coming out into the light after all that time to mate and die! Cicadas may look a little scary, but don’t worry: they are not a threat to humans. Even though they can get quite large for insects, growing to up to 2.5 inches, they eat twigs and liquid from plants. Adult cicadas do not eat at all. They only live for a short time to mate.
3. What argument do both sources share about cicadas?