Nutrient Cycles Questions And Answers Already Graded A+

many of the carbon-based fuels are categorized as fossil fuels because they formed from decayed organisms over millions of years. list as many examples of fossil fuels as you can. - ️️coal, natural gas, gasoline, diesel, machine lubricant oils, peat, petroleum derivatives how does our use of these carbon stores affect the amount of CO2 in the atmosphere? - ️️the combustion of fossil fuels frees carbon in the atmosphere increasing the amount of CO2 and CO (carbon monoxide) in the air (greenhouse effect) what is another way in which human activity is increasing the amount of atmospheric CO2, and what are potential global effects of these changes in CO2 levels? - ️️deforestation; by cutting down trees, which remove carbon from the atmosphere during photosynthesis, we are contributing to the increase in levels of CO2 in the air. This contributes to the greenhouse effect (global warming) which process(es) of the water cycle—precipitation, evaporation, condensation, runoff, percolation or transpiration—might contribute to the addition of pollutants to rivers, lakes, and oceans? why? - ️️they concentrate chemicals long their path precipitation - acid rain evaporation - concentrates pollutants left behind runoff - water that comes down the mountain will carry debris and pollutants to aquifers, rivers, oceans which of the processes associated with the water cycle might be responsible for helping to clean or filter the water? - ️️percolation: water get filtered by soil the water cycle is a closed system, meaning no water enters from beyond the system nor leaves the system. what does that say about the importance of keeping the water on Earth free from pollution? - ️️the water we have is all the water we have. if we don't clean it, the water we have will stay polluted. polluted water is useless to us living things two ways that carbon (usually in the form of CO2) enters the atmosphere - ️️animal and plant respiration wastes and dead organisms must be broken down in order for their components to be used again. a. what organisms in the cycle carry out this process? b. what would happen if decomposition did not occur? - ️️a. decomposersb. disease and infestation would spread not all dead organisms are acted on by decomposers. Instead of being immediately recycled, the carbon from some organisms is kept in a type of long-term storage, or carbon sink. a. list four materials that contain this stored carbon. b. what is the collective term for these four materials? c. how do humans use the materials in the carbon sink? - ️️a. oil, peat, coal, natural gas b. fossil fuels c. combustion to generate energy and move machines