Biology

The correct answer is: C.through the food web.

Here’s how it works:

1.Nitrates are absorbed by plants from the soil through their roots.

2.Plants use nitrates to make proteins and other essential molecules, incorporating nitrogen into their tissues.

3.Herbivores (plant-eating animals) then consume the plants, incorporating the nitrogen from the plant material into their own bodies.

4.Carnivores (meat-eating animals) then consume the herbivores, continuing the transfer of nitrogen through the food web.

So, nitrates absorbed by plants eventually make their way into the bodies of animals through the food web, as animals eat plants or other animals.