Question

what is global warming and its effects​

Answer 1

Answer:

Global warming, the gradual heating of Earth's surface, oceans and atmosphere, is caused by human activity, primarily the burning of fossil fuels that pump carbon dioxide (CO2), methane and other greenhouse gases into the atmosphere. ... Already, global warming is having a measurable effect on the planet.

Answer 2

Answer:

Global warming, the gradual heating of Earth's surface, oceans and atmosphere, is caused by human activity, primarily the burning of fossil fuels that pump carbon dioxide (CO2), methane and other greenhouse gases into the atmosphere. Despite political controversy about climate change, a major report released Sept.