Description: If the prices of goods and services do not include the cost of negative externalities or the cost of harmful effects they have on the environment, people might misuse them and use them in large quantities without thinking about their ill effects on the environment.
Jet lag. Jet lag is a mismatch between your body clock and the local time wherever you are. It's caused by rapid travel across time zones. Jet lag is also compounded by the fact that long hours spent on a plane can cause you to sleep too much, or not enough, possibly at the wrong time of day relative to where you departed from.
Report Abuse. We have time zones so that everyone on the planet does most things at the same time that a person does in another part of the world such as sleeping for example. The majority of people sleep at night.he reason there are different time zones and an International dateline is because there are different times. I suppose we could all go on GMT but that would mean that when it is 12:00 GMT it would be the middle of the night in Tokyo and early morning in New York.