Well, hot events result in the greenhouse effect. So, the phrase that does not describe a cause of the greenhouse effect is cooler temperatures, whereas solar radiation, CO2, and water vapor contribute to it.
Greenhouse effect is a consequence that results from increased quantities of gases, called green house gases such as carbon dioxide, water vapor, etc. in the atmosphere. The gases trap heat from the sun, which results to a gradual increase in the temperature of earth's atmosphere.
Therefore, greenhouse effect increases the temperature of the Earth by trapping heat in our atmosphere, thus keeping the Earth's temperature higher than normal .
