Read the text.

Climate change    
Weather changes from day to day — sometimes it 1) _____ \( RAIN\), other days it’s hot. Climate is the pattern of the weather conditions over a long period of time for a large area. And climate can be affected by Earth’s atmosphere.       
Our Earth 2) _____ \(SURROUND\) by an atmosphere made up of 3) _____ \(GAS\) . When sunlight enters our atmosphere, some of the sun’s heat is trapped by the gas, and some bounces back out into space. By trapping that heat, our atmosphere keeps Earth warm enough to live on. Without it, our planet would be very cold, like Mars.       
Earth’s climate has always naturally cycled through change, caused by how much of the sun’s energy 4) ______ \(ABSORB\) by the atmosphere. In fact over the past 650,000 years, the Earth has gone through seven ice ages and warming periods.     
But during the past few hundred years, oil, gas, and coal 5) _____ POWER homes, cars, and factories. These energy 6) ____ SOURCE release a gas called carbon dioxide \(CO2\) into the atmosphere. This gas traps heat that would otherwise escape Earth’s atmosphere. That 7) ____ INCREASE Earth’s temperature, which contributes to the planet’s warming.That’s why many scientists agree that the Earth is now warming because of human activity. How do they know? Through careful study, they know that the climate 8) ____ WARM about 10 times 9) ____ FAST than the average previous warming times. They’ve also ruled out the natural factors that caused warming in the past.
The Earth’s average temperature 10) ____ INCREASE about 1.5°F in the past hundred years. It doesn’t sound like much, but scientists think that the temperature increase has caused melting glaciers, droughts, and coral reefs dying off. They expect the climate will warm another 8.5°F to 8.6°F by the year 2100.

Transform the word in capitals so that it grammatically fits in the gap 3.