In the context of diminishing marginal returns, what happens to the marginal product of an input as more units of that input are added, assuming all other inputs remain constant?

Diminishing marginal returns occur when adding more of a certain input, like labor, leads to smaller increases in output after a certain point. For example, imagine a farmer who has a fixed amount of land and starts hiring workers. At first, each new worker helps produce a lot more crops because they can work together efficiently. However, as more workers are added, they start getting in each other’s way, and each additional worker contributes less to the total harvest. This means that while the total output may still rise, the extra output from each new worker decreases, showing diminishing returns.