ECOLOGY
ENVIRONMENTAL ISSUES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Greenhouse effect
|
|
Polar melting
|
|
Reforestation
|
|
Global warming
|
Detailed explanation-1: -Human activities contribute to global warming by increasing the greenhouse effect. The greenhouse effect happens when certain gases-known as greenhouse gases-collect in Earth’s atmosphere.
Detailed explanation-2: -Credit: NASA Jet Propulsion Laboratory. The greenhouse effect is the way in which heat is trapped close to Earth’s surface by “greenhouse gases.” These heat-trapping gases can be thought of as a blanket wrapped around Earth, keeping the planet toastier than it would be without them.
Detailed explanation-3: -Why is Earth getting warmer? Extra greenhouse gases in our atmosphere are the main reason that Earth is getting warmer. Greenhouse gases, such as carbon dioxide (CO2) and methane, trap the Sun’s heat in Earth’s atmosphere.
Detailed explanation-4: -Condensation is a warming process because it releases energy into atmosphere that causes its temperature to increase. When condensation occurs, water vapour condenses from gas into liquid. The liquid state needs less energy than gaseous state.