sentence2_structure: greenhouse gases<>entering<>earth's atmosphere$$$Most scientists<>agree<>that an increase in the amount of greenhouse gases entering earth's atmosphere causes an increase in melting of polar ice caps$$$an increase in the amount of greenhouse gases<>causes<>an increase in melting of polar ice caps
sentence1: But increased melting of the polar ice caps would raise sea levels, increasing ocean floor pressures and prompting formation of more gas hydrates.
sentence2: Most scientists agree that an increase in the amount of greenhouse gases entering earth's atmosphere causes an increase in melting of polar ice caps.
question: Most scientists agree that an increase in the amount of greenhouse gases entering Earth's atmosphere causes