What term refers to projects on a farm like crop or livestock production?

The term that refers to projects on a farm, such as crop or livestock production, is "enterprises." In the context of agriculture, enterprises encompass the various business activities undertaken by a farm, including growing specific crops, managing livestock, or engaging in other agricultural operations. Each enterprise can represent a distinct project that contributes to the overall productivity and profitability of the farming business.

For instance, a farmer may have separate enterprises for corn production, cattle raising, and vegetable gardening. These enterprises help categorize and manage different aspects of farm operations, allowing for better tracking of performance and resource allocation.

The other options don't align with the specific definition of farm projects. While ecological studies focus on the relationship between farming and the environment, and economics relates to the financial aspects of agricultural businesses, exports pertain to the sale of farm products to other countries rather than the projects themselves. Therefore, "enterprises" is the most fitting term in this context.