In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: What kind of hormones are released into the environment for communication between animals of the same species? Answer: pheromones

A: Pheromones are released into the environment for communication between animals of the same species.
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Q: Question: Can nematodes be a parasite of plants, animals, or both? Answer: both

A: Nematodes can be a parasite of both.
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Q: Question: The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and this? Answer: filtration

A:
The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and filtration.
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