Which of the following biogeochemical cycles can be influenced by human activity and cause eutrophication of a local water supply? question 1 options: oxygen cycle water cycle nitrogen cycle carbon cycle question 2 (20 points) question 2 unsaved the burning of fossil fuels releases which of the following gases into the atmosphere? question 2 options: carbon dioxide nitrate nitrogen oxygen question 3 (20 points) question 3 unsaved carbon dioxide enters the atmosphere through each of the following processes except one. which one? question 3 options: respiration photosynthesis burning fossil fuels volcanic eruptions question 4 (20 points) question 4 unsaved carbon in the bodies of marine organisms is often found in which of the following forms? question 4 options: clastic sedimentary rock chemical sedimentary rock igneous rock layered sedimentary rock question 5 (20 points) question 5 unsaved the carbon cycle works in conjunction with which of the following? question 5 options: cycling of oxygen all biogeochemical cycles water cycle nitrogen cyclewill mark most !