Global warming is known as which effect?
Correct answer: Greenhouse

Roger
Its a natural phenomenon the earth has been heating and cooling since the beginning of its existence ,global warming is not man made,scaremongering at its finest!

Elizabeth
howdy , in the 70's it was supposed to be cooling, now it's supposed to be warming. Too many failed predictions to be considered reliable science.

Excuse the Kuz
Questions like this really brings out the wackos.

little b
i dont like the greenhouse effect

Tina M.
howdy , I hope people wake up! Global warming is real!

howdy
Roger, true, but that happens over millions of years. Not decades like it's doing now.