The answer is; D
Carbon dioxide and methane are potent greenhouse gases. They cause heating of the lower atmosphere, by trapping sunlight, that results to climate change. Due to the higher melting and boiling temperatures of phosphorus, it is rare that it occurs as gas in room temperatures. Phosphorus, therefore, does not pose a great threat of climate change.
ATP is the cell's energy, the mitochondria (aka the power house of the cell) is what produces ATP. The process is called Cellular Respiration.
No it is not apart of the phylum chordate so therefore the answer is no