Global warming is the term used to describe a gradual increase in the average temperature of the Earth’s atmosphere and its oceans. This causes a change in the Earth’s climate. Global warming occurs when carbon dioxide (CO,) and other air pollutants and greenhouse gasses collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the Earth’s surface. Normally, this radiation would escape into space. But these pollutants, which can last for years even up to centuries in the atmosphere, trap the heat and make the planet warmer. This is known as the greenhouse effect. Climatologists agree that the average temperature of the earth has risen between 0.4 and 0.8°C over the past 100 years. They feel that in the past 50 years, the average global temperature has increased at the fastest rate in recorded history. This is chiefly because the increased volumes of carbon dioxide and other greenhouse gases released by the burning of fossil fuels, land clearing, agriculture and other human activities have been the chief causes of the global warming that has occurred over the decade. Scientists now predict that average global temperatures could increase between 1.4 and 5.8°C by the year 2100. Global warming has many environmental, economic, and health consequences. It will be manifested in the melting of the polar ice caps, as well as an increase in the occurrence verity of storms and other severe weather events such as wildfires. Rising sea levels could lead to coastal flooding. Thus, there could be pests, heat waves, heavy downpours and increased flooding as a result of global warming. And these could damage or perish agriculture and fishing industry. Disruption of habitats such as coral. reefs and the Alpine meadows could drive many plant and animal species to extinction. Allergies, asthma and infectious disease outbreaks will become more common due to higher levels of air pollution and the spread of conditions favourable to microorganisms and mosquitoes. Q. Pick out any one of the phrasal verbs from the passage