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Which is the primary source of energy for the human body?
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7. Energy and Metabolism
Introduction to Energy
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How do most consumers obtain energy?
A
By chemosynthesis
B
By absorbing sunlight directly
C
By consuming other organisms
D
By photosynthesis
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Understand the role of consumers in an ecosystem: Consumers are organisms that cannot produce their own food and must obtain energy by eating other organisms.
Differentiate between producers and consumers: Producers, like plants, use photosynthesis to convert sunlight into energy, while consumers rely on consuming other organisms for energy.
Identify the types of consumers: Consumers can be herbivores (eating plants), carnivores (eating other animals), omnivores (eating both plants and animals), or decomposers (breaking down dead material).
Recognize that chemosynthesis and photosynthesis are processes used by producers, not consumers: Chemosynthesis is used by some bacteria to produce energy from chemical reactions, and photosynthesis is used by plants to convert sunlight into energy.
Conclude that consumers obtain energy by consuming other organisms, as they rely on the energy stored in the biomass of other living things.
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