Step 1: Understanding the Concept:
Long-term agricultural sustainability depends on the availability and ecological health of foundational primary factors of production.
Step 2: Detailed Explanation:
Agricultural intensification is constrained by the depletion and degradation of finite natural resources, including fertile arable land, groundwater aquifers, soil organic matter, and biodiversity.
Resource scarcity in water and land represents the foremost limiting factor to future agricultural expansion.
Step 3: Final Answer:
Therefore, agricultural growth is likely to be hampered by scarcity of natural resources.