<h2>A runaway greenhouse effect is a process in which a net positive feedback between surface temperature and atmospheric opacity increases the strength of the greenhouse effect on a planet until its oceans boil away. An example of this is believed to have happened in the early history of <em><u>Venus.
<----------------------------------</u></em></h2><h2 /><h2>yo answer is venus</h2><h2 /><h2><em><u>can i get brainlest</u></em></h2>
