Question

what is global warming​

Answer 1

Answer:

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

Answer 2

$\huge\color{red}{\mid{\fbox{\tt{Answer}}\mid}}$

Global Warming is the gradual increase in the overall temperature of the Earth’s atmosphere. It begins with a phenomenon called the greenhouse effect. The greenhouse effect occurs when there is an interaction between Earth’s atmosphere and the radiation from the sun. Sunlight shines onto the Earth’s surface, and is absorbed and radiated back into the atmosphere as heat. The gases within the Earth’s atmosphere are able to absorb about 90% of this heat, warming to a life-sustaining temperature of 59 degrees Fahrenheit. The greenhouse effect is made up of three primary atmospheric gases called “greenhouse gases”. They include carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). An increase in these greenhouse gases causes a rise in Earth’s temperature and has the potential to greatly impact life on the planet.