Mechanical power has several advantages over work animals:

1. Efficiency: Machines can convert a higher percentage of the fuel’s energy into work compared to work animals. This means that machines can perform the same amount of work with less fuel or energy input, resulting in cost savings.
2. Consistency: Machines can work continuously and at a consistent pace, whereas work animals may tire or require rest. Machines can also be programmed to perform specific tasks repeatedly, which can improve productivity and efficiency.
3. Flexibility: Machines can be adapted to perform a wide variety of tasks, whereas work animals are typically limited to specific types of work. This means that machines can be used in a wider range of industries and applications.
4. Power: Machines can provide greater power than work animals. This means that they can perform heavy-duty tasks that may not be possible for work animals, such as lifting heavy loads or excavating large amounts of earth.
5. Precision: Machines can be designed to perform tasks with a high degree of precision and accuracy, which is important in industries such as manufacturing and engineering.

Overall, the advantages of mechanical power over work animals include greater efficiency, consistency, flexibility, power, and precision. These advantages make machines a more practical and effective choice for many industries and applications.