The discovery of DNA has allowed us to trace ancestors and find out how early humans lived, what they looked like, and who they were.
Answer: The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. During digestion, digestible carbohydrates are ultimately broken down into glucose and used to provide energy through metabolic pathways.
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Dogs
Hints:
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Answer:
I conclude that the answer is B
