Final answer:
A consumer is an organism that obtains energy by consuming other organisms. Grass is not a consumer but a producer, whereas bacteria can be both consumers and decomposers.
Step-by-step explanation:
In biology, a consumer is an organism that obtains energy by consuming other organisms. A snake and an owl are both examples of consumers because they feed on other animals. Grass, on the other hand, is not a consumer because it is a producer. Producers, like grass, can make their own food through a process called photosynthesis. Bacteria can be both consumers and decomposers, depending on their feeding habits.
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