Answer:
the clouds of pollution in the air above the plant
Step-by-step explanation:
Ann Cleaves's cartoon presents a picture of the pollution that has been produced because of human activities. The pollution from the chimney of the factories all around the world has led to an immense increase in the global temperature. In the cartoon, one of the people is saying 'Now, we're really cooking!' This exemplifies the increase in temperature because of which every person would be boiling. This is an exaggeration but shows the real picture of what human activities had led to.