Environment- Global Warming: Causes and Solutions

<span><br></span><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><span>Some people believe the world is getting hotter. What are the causes and possible solutions for global warming?</span> </p><span><br></span><span><br></span>