Kyoto Protocol's (an international treaty to reduce greenhouse gas emissions) first meeting was held at which country?
1). USA
2). Germany
3). Japan
4). Switzerland
2. Disease aggravated by air pollution is
4. What is the cause of the Exxon Valdez?
5. Drinking of fluoride containing water results :
6. During the past century, the temperature of Earth has increased by ________.
8. The darkening of the skin due to arsenic poisoning is called
9. Which of the following projects contribute to displacement?