Final answer:
Herding offers protection, hydrodynamic efficiency, and mobility for grazing animals.
Explanation:
Protection: Herding provides protection for grazing animals by utilizing the 'selfish herd' principle, where group members benefit from safety in numbers, making it harder for predators to target individual animals.
Hydrodynamic efficiency: Herding also enhances hydrodynamic efficiency when animals move collectively, such as in fish schools or bird flocks, reducing drag and energy expenditure.
Mobility: Groups of herding animals need to constantly move to find fresh pastures, a necessity that promotes their survival and ability to thrive in various environments.
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