Trees release oxygen.

Meaning: This means that trees produce oxygen as a byproduct of photosynthesis, releasing it into the atmosphere and providing a vital resource for animals and plants.

Choice of Words: Trees are large plants with leaves that produce oxygen through photosynthesis. Release is a verb that means to let go or allow to escape. Oxygen is a noun that refers to a gas that is essential for life and is found in the air we breathe.

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