Question

Which of the following statements is true? Humans have never lived through a period of time with this much CO2. We don't need to worry about climate change. Humans have lived through periods of time where there was this much CO2 in the atmosphere before. Earth's climate never changes. Any increase in temperature is only temporary and not worth worrying about. NASA has a good degree of

Answer 1

Humans have never lived through a period of time with this much CO2.