Multiple Choice
What is the ultimate source of energy that drives the food chain?
8. Thermochemistry
Nature of Energy
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What is the primary source of energy in most ecosystems?
A
Tidal forces
B
Geothermal heat
C
The Sun
D
Wind energy
Verified step by step guidance1
Begin by understanding the concept of energy sources in ecosystems. Ecosystems rely on energy to sustain life, and this energy can come from various sources.
Consider the role of the Sun in ecosystems. The Sun is the primary source of energy for most ecosystems because it provides the light energy necessary for photosynthesis.
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the Sun into chemical energy stored in glucose. This chemical energy is then used by these organisms and others in the ecosystem.
Evaluate other energy sources listed: Tidal forces, geothermal heat, and wind energy. While these can contribute to energy in specific ecosystems, they are not the primary source for most ecosystems.
Conclude that the Sun is the primary source of energy in most ecosystems because it drives the process of photosynthesis, which is fundamental to the energy flow in ecosystems.
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