[ 167 ] Earth and Space Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Increased levels of carbon dioxide and other greenhouse gases cause increased temperatures worldwide known as ____________. The sun’s energy reaches Earth in the form of light radiation. Plants use this light to synthesize sugar molecules, which people consume and derive energy from. What is this process called? The sun heats Earth’s surface and drives ________ within the atmosphere and oceans, producing winds and ocean currents.