Multiple Choice
Which of the following statements is true about the energy flow in an ecosystem?
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52. Ecosystems
Energy Flow Through Ecosystems
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What is the original source of almost all the energy in most ecosystems?
A
Wind energy
B
Geothermal energy
C
Chemical energy from soil
D
The Sun
Verified step by step guidance1
Identify the primary source of energy for most ecosystems. Consider the various forms of energy that can be present in an ecosystem, such as solar, wind, geothermal, and chemical energy.
Understand that ecosystems rely on a continuous input of energy to sustain life processes. This energy is primarily used by producers, such as plants, to create organic compounds through photosynthesis.
Recognize that photosynthesis is the process by which plants, algae, and some bacteria convert light energy, usually from the Sun, into chemical energy stored in glucose. This process is fundamental to the energy flow in ecosystems.
Consider the role of the Sun in providing the light energy necessary for photosynthesis. The Sun's energy is captured by chlorophyll in plant cells and used to convert carbon dioxide and water into glucose and oxygen.
Conclude that the Sun is the original source of almost all the energy in most ecosystems, as it provides the energy required for photosynthesis, which in turn supports the food web by providing energy to primary consumers and higher trophic levels.
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