Exam 1

3. (n.) a chemical substance used to kill insects and small animals that destroy crops
6. (n.) the activity of using messages or images on social networking sites, emails, etc. to frighten or upset someone
7. (v.) to make a place or substance less pure or make it poisonous
9. (n.) the existence of a large number of different kinds of animals and plants which make a balanced environment
11. (n.) the process of making somewhere, e.g., parks and other areas, greener with trees and plants in a city
15. (n.) the red spots appear on the face and neck
16. (n.) a natural ability to influence and interest other people and make them admire you
17. (n.) the opposition to authority or the unwillingness to obey rules or accept normal standards of behaviour
19. (n.) a form of air pollution that looks like a mixture of smoke and fog, caused by smoke from cars and factories in cities
20. (n.) a substance that pollutes something, especially air and water

1. (n.) an excessive pride in yourself, especially in your own appearance, abilities or achievements
2. (n.) a failure to understand someone correctly
4. (n.) the use of energy, food or materials; or the amount that people use
5. (n.) the fact or process of becoming worse
8. (adj.) connected with the way plants and living creatures are related to each other and to their environment
10. (n.) an official document stating that you have completed a course of study or passed an examination
12. (adj.) thinking about a person or thing too much or all the time
13. (n.) an amount of money that is given by a school or an organization to help pay for the studies of a person
14. (adj.) involving risk or danger, especially to someone’s health or safety
18. (adj.) not using artificial chemicals in the growing of plants and animals for food or other products