Final answer:
Crossbreeding different types of corn for drought and pest resistance is an example of agricultural biotechnology, aiming to enhance crop biodiversity and sustainability.
Step-by-step explanation:
When a farmer crossbreeds two different types of corn, one that requires less water and one that is naturally resistant to pests, to create a single type of corn with both characteristics, this process is an example of agricultural biotechnology. This approach involves employing traditional breeding techniques and can also include modern genetic engineering methods. The resulting corn is cultivated for improved crop biodiversity, sustainability, and resilience against environmental challenges, effectively combining favorable traits such as drought resistance and pest resistance.