Carnivores such as the frog, snake, and hawk eat other animals and are heterotrophs. Humans are omnivores and heterotrophs, consuming both plants and animals. Correct answer to the question is D. Frog, snake, and hawk.
The organisms that are carnivores in the given food web would likely be the frog, snake, and hawk. Thus, the correct answer to which organisms are carnivores is D. Frog, snake, and hawk. Carnivores are heterotrophs that consume animals. Examples of carnivores include lions, polar bears, hawks, frogs, salmon, and spiders. They are distinct from herbivores, which consume plants, and omnivores, which consume both plants and animals. Humans fall into the category of omnivores because they eat both producers such as plants and consumers such as meat.
To answer question 15, the term that applies to humans is heterotroph, as they obtain their energy by consuming other organisms, and omnivore, because they consume both plants and animals. They are neither producers nor primary consumers and, while they can act as tertiary consumers, it is not their only role within a food web.