Final answer:
When a plant dies, its materials go through nutrient recycling, breaking down into organic matter that enriches the soil and provides nutrients for other plants to grow.
Step-by-step explanation:
When a plant dies, the materials that make up the plant go through a process called nutrient recycling.
This process allows the plant to reuse the components of its dead tissues, such as leaves and flowers, for other processes like seed development.
The dead plant materials decompose and break down into organic matter, which enriches the soil and provides nutrients for other plants to grow.
A possible way for Brad to observe this process is by gathering several dead leaves and watching what happens to them over several weeks.