ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They increase the total amount of matter over time.
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They can be affected by human activity.
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They ensure that nutrients are only used once by organisms.
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They create new atoms to replace lost ones.
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Detailed explanation-1: -Human activities cause an imbalance in biogeochemical cycles. Human activities such as polluting the water bodies or deforestation have increased the CO2 level in the atmosphere and also nitrogen level in the biosphere. This leads to a problem such as cultural eutrophication. Was this answer helpful?
Detailed explanation-2: -Recently, people have been causing these biogeochemical cycles to change. When we cut down forests, make more factories, and drive more cars that burn fossil fuels, the way that carbon and nitrogen move around the Earth changes. These changes add more greenhouse gases in our atmosphere and this causes climate change.
Detailed explanation-3: -Answer and Explanation: The following statement about biogeochemical cycles is true: C) They describe the movement of water and other materials through an ecosystem. Biogeochemical cycles involve both biotic (living) and abiotic (nonliving) factors within an ecosystem.
Detailed explanation-4: -Just like the matter and nutrients in the environment, the particles inside our body take part in the biogeochemical cycles that happen in the ecosystem. Our air, water, and food intake do not stay inside our bodies permanently.
Detailed explanation-5: -Answer and Explanation: The Rock cycle is one category of biogeochemical processes least affected by human activities.