Which is of the following statements about carbon dioxide is TRUE?
A. It is the most potent greenhouse gas.
B. It has not been above 300 ppm in the past 800,000 years.
C. It has recently increased at a rate similar to other periods in history.
D. It is the most abundant greenhouse gas.

Ateam from new york presbyterian hospital is conducting a study about a recent increase in cases involving both excess sweating and kidney stones. what would the team need before it draws a conclusion about the cases? medications that are specifically designed to treat the sickness machines that are built to process blood and reduce symptoms until patients are healthy again data that profile the various patients who report these symptoms proof that the excess sweating is related to the excessive kidney stones