Question

the halifax river has a major flood plain in port orange, florida. minerals are deposited into the soil of the flood plain when the water overflows the banks of the river. these minerals can increase the growth of plants in the flood plain. which best describes the role of the deposited minerals in the flood plain ecosystem?
a trophic level
a limiting factor
a territorial boundary
a food - chain component

Explanation:

A limiting factor is something that can restrict the growth or distribution of an organism. In this case, minerals are important for plant growth. Before the flood, the soil might have lacked sufficient minerals (a limiting factor for plant growth). When the river overflows and deposits minerals, it removes or lessens that limitation, allowing for increased plant growth.
A trophic level refers to the position an organism occupies in a food chain (e.g., producer, primary - consumer). Territorial boundary is related to the area an animal defends. A food - chain component is either a producer, consumer, or decomposer. None of these fit the role of deposited minerals as well as a limiting factor.

Answer:

a limiting factor