Frogs help control pests.
Meaning: This sentence tells us that frogs help to keep the population of harmful or annoying animals under control.
Choice of Words: Frogs are animals that help to keep the population of other animals in check. Help means to provide assistance or support. Control means to manage or regulate. Pests are animals that are considered to be harmful or annoying. This sentence describes how frogs help to keep the population of pests under control.
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