Question

I said to my friend, "Mother will be delighted when she hears the news that I have won the spelling contest." mother said ​

Answer 1

Didn't understood your ques.

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.