Answer:
PART 1 - Highlights in bold
A food chain is a link between plants and animals. It starts with a plant. The next part of the link is a plant eater. When the prairie plants were uprooted, the animals that depended on them lost their food source. So while the farmers produced more food for people, they broke the animals' food chain.
A food chain is part of a bigger system called a food web. That web links the living things system. The herbivores in that system depend on the plants. If the plants are removed, the herbivores cannot survive. Then the carnivores, the animals that eat other animals, lose their food, too. Remove just one kind of plant from an environment and you disrupt the food web. Plow up the land and you destroy the whole system.
PART 2
The author’s overarching point is that everything within the food chain and food web ecosystem is interlinked, meaning that if any chain breaks, it can affect other parts of the food web. This interdependency illustrates between the two paragraphs written by the author.
The food chain is the primary focus of the first paragraph, using plants and animals as examples of food chain dependency. Using the prairie plant example, the author demonstrates how animal species can be affected by someone removing the sole source of their food.
In the second paragraph, the author illustrates the linking of food chains to create the food web ecosystem. They advance their point using food chain examples and predator relationships between plants, herbivores, carnivores, and humans. The author illustrates the dependencies between each of these chains within a food web and how easily removing one plant has an impact.
In summary, the author logically ties the food chain and food web chain together using interdependent examples and how they can impact the food chain ecosystem as a whole.
Step-by-step explanation: