They thought Clinton had been impeached more for political reasons than for wrongdoing. D is the answer
The carbon cycle and oxygen cycle is mainly maitained by the plants animals. ... In photosythesis, carbon dioxide is utilised from the atmosphere and oxygen is released from the water by the process of photolysis of water. In respiration carbon dioxide and water is released from the product of photosynthesis and/or glucose.
I think the answer would be the Compromise of 1850 that led to sectional tensions and the formation of a new political party. It was a package of five separate bills passed by the United States Congress in September 1850, which defused a four-year political confrontation between slave and free states regarding the status of territories acquired.