They are the ones who feed on secondary consumers. They are also all apex predators, meaning they have no predators in their natural environment—an exception to this is the leopard, which is occasionally predated by lions and tigers, with which they share habitats. However, energy is used up and is lost as heat as it is transferred through each of the trophic levels, which results in a low availability of energy in the higher levels (this can be viewed as an energy pyramid). The tertiary sector or service sector is called the link in the economic chain that, unlike the previous two, is not dedicated to the extraction of raw material or its transformation into consumer goods, but to the satisfaction of operational and commercial needs or of any other nature required by both end consumers and other companies and industries. An individual living thing. Tertiary Consumer Definition A tertiary consumer is an animal that obtains its nutrition by eating primary consumers and secondary consumers. An herbivorous animal C. A fast animal D. An animal in the third trophic level, 2. ; Tertiary consumers can be either fully carnivorous or omnivorous. Which of the following describes a tertiary consumer? By eating foods such as grain-fed chicken, a person would fill the role of secondary consumer, however, if that chicken is also able to eat insects the person is a tertiary consumer. Tertiary Consumers. However, not all secondary consumers ...