ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How the adaptations of organisms change based on environmental pressures
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How energy moves through trophic levels of an ecosystem
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How certain nutrients move through the environment and are continually used and recycled
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How biotic changes destroy unstable ecosystems
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Detailed explanation-1: -Energy flows through an ecosystem and is dissipated as heat, but chemical elements are recycled. The ways in which an element-or compound such as water-moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle.
Detailed explanation-2: -Biogeochemical cycles represent the main system by which the energy of the Sun is transformed into energy of the chemical compounds by living beings and products of their activity.
Detailed explanation-3: -All the nutrients-such as carbon, nitrogen, oxygen, phosphorus, and sulfur-used in ecosystems by living organisms are a part of a closed system; therefore, these chemicals are recycled instead of being lost and replenished constantly such as in an open system.
Detailed explanation-4: -Biogeochemical cycles, also known as nutrient cycles, describe the movement of chemical elements through different media, such as the atmosphere, soil, rocks, bodies of water, and organisms. Biogeochemical cycles keep essential elements available to plants and other organisms.