Question

heterotrophs
definition: organisms that cannot produce their own food and must obtain energy by consuming other organisms.
characteristics
examples: dogs mushrooms humans
non - examples: grass algae the preform

Explanation:

The problem is about heterotrophs, which falls under Biology (a subfield of Natural Science). The table provides the definition, examples, and non - examples of heterotrophs. To complete the "Characteristics" and "Non - Examples" (assuming a typo like "the preform" might be "the preform" or a misspelling, maybe "the producer"?) section, we can use biological knowledge. Heterotrophs can be further characterized, for example, they can be divided into different types like herbivores, carnivores, omnivores, and decomposers. The non - examples should be autotrophs (organisms that produce their own food), like plants (grass, algae) and maybe producers (if "the preform" is "the producer").

Answer:

For "Characteristics": Heterotrophs can be herbivores, carnivores, omnivores, or decomposers; they depend on other organisms for energy.
For "Non - Examples" (correcting the typo if "the preform" is "the producer"): grass, algae, producers (like plants that do photosynthesis).