What are externalities? give an example of a positive externality and a negative externality. in each case, explain the difference between the private market outcome and the socially optimal outcome.

Is the sentence the refree blew her whistle and both teams rushed onto the field a coumpound or simple sentence

Returning from vietnam, we were given a parade. crowds of screaming people waving signs — not just on one road, one day. no, they were everywhere. every day. on the streets, on the television, on the radio. a hot, angry tangle of shaking fists and ugly words that threatened us like a monster with a hundred heads. our country had chewed us up and spit us out, and now we were being treated as if it were our fault. which sentence best uses figurative language to match the paragraph's tone? a. our feet were frozen in place as the street itself strained to hold us back. b. i felt unappreciated and condemned for actions i had thought were heroic. c. i hadn't expected to find myself in a rags-to-riches situation such as this. d. we had come home to a feeding frenzy and were being treated as bait.

More than a hundred million e-mails are sent around the world each day, and they are all vulnerable to interception. digital technology has aided communication, but it has also given rise to the possibility of those communications being monitored. according to zimmermann, cryptographers have a duty to encourage the use of encryption and thereby protect the privacy of the individual. —the code book, simon singh what is the purpose of the statistic in this passage? it shows how big the need is for protection. it explains that email is an effective form of communication. it gives new ways to monitor email traffic. it illustrates how popular email has become.