Multiple Choice
Which energy substrate contains the most energy per gram?
8. Thermochemistry
Nature of Energy
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From which source do almost all producers obtain their energy?
A
The Sun
B
Nuclear reactions
C
Chemical reactions
D
Geothermal vents
Verified step by step guidance1
Identify the role of producers in an ecosystem. Producers, such as plants, algae, and some bacteria, are organisms that can produce their own food through the process of photosynthesis or chemosynthesis.
Understand the process of photosynthesis. Photosynthesis is the process by which producers convert light energy, usually from the Sun, into chemical energy stored in glucose molecules.
Recognize the primary source of energy for photosynthesis. The Sun provides the light energy necessary for photosynthesis, making it the primary energy source for most producers.
Consider alternative energy sources. While the Sun is the main energy source, some producers, especially those in deep-sea environments, rely on chemosynthesis, which uses chemical reactions to obtain energy, often from geothermal vents.
Conclude that for the majority of producers, the Sun is the primary source of energy, as it provides the light needed for photosynthesis, which is the most common method of energy production in ecosystems.
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