the powerful effect that something has on a person or a situation an impact an area of economic activity a sector the business of providing holidays for very large numbers of people mass tourism to be too much to deal with to overwhelm to control something with rules, laws or another system to regulate carbon dioxide produced by cars, planes, factories, etc., thought to be harmful to the environment carbon emissions an advantage that only one person or group of people has, often because they have money or a special position a privilege people who know and think about what is happening around them when they buy and use things conscious consumers