The atmosphere's variable gases that most influence the greenhouse effect are <em><u>carbon dioxide and water</u></em>.
<h3><u>Explanation</u>;</h3>
<em><u>Green house effect is a phenomenon where the radiation from the atmosphere of the earth warms the surface of the earth to a temperature above what it would be.</u></em> It occurs when the atmosphere traps heat radiating from the earth towards the space.
<em><u>Certain gases in the atmosphere block the heat from escaping, these gases are called the green house gases. </u></em>These gases contribute to the green house effect, they include, <em><u>water vapor which is the most abundant green house gas, carbon dioxide a very important component of the atmosphere,</u></em> methane, nitrous oxide, CFCs, etc.