Why do animals and humans need proteins in their diet? 1. They need these proteins to incorporate directly into required tissues
2. They break down protein into amino acids needed for their particular protein synthesis
3. They cannot make their own protein
4. They need protein for cell energy

answer; the correct answer is conflict- related aggression; +

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linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.