Carnivores are animals that eat other animals. Omnivores are animals that eat both plant and animal foods. View full text of this story. A food chain represents the relationships between plants, predators and prey in an ecosystem. With each type of food an animal eats, it becomes a link in a different food chain.
Food chains connect to form what scientists call a food web.
View full text of this story. Unlike other living things, however, people have many choices about what to eat and how to serve it up. We can control our food supply and change foods from their original form. Sometimes, it's hard to tell which raw foods go into processed foods. A healthy diet features fresh, raw foods from all the food groups.