Acid rain is a problem in areas with large populations, and it can be damaging to the organisms in an ecosystem. Acid rain can reduce the number of sensitive aquatic organisms, such as fish and frogs. On land, evidence of acid rain can be seen in plants that
appear brown or dead,
Image courtesy of NASA
What would be the best solution for reducing acid rain in these ecosystems?
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4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.