What is the main idea of this text?
In the debate on the cause of the rise in global temperature, evidence suggests that greenhouse gases are the cause of global warming.
In the debate on the cause of the rise in global temperature, evidence suggests that greenhouse gases are not the cause of global warming.
In the debate on the cause of the rise in global temperature, evidence suggests that the sun is the cause of global warming.
In the debate on the cause of the rise in global temperature, evidence suggests that the sun is not the cause of global warming