Oxygen
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Example:
Imagine you're at a crowded concert, and you need to find your way to the exit when the show is over. Just as finding the exit is essential for smoothly leaving the venue, oxygen is essential for plants and animals to sustain life. In this analogy, the exit represents oxygen, and just as you need to navigate through the crowd to reach it, living organisms rely on oxygen in the air and water to maintain their vital processes, ensuring their survival and well-being.
Practice Version
Oxygen: The gas found in air and water that most plants and animals need to live. Oxygen. Oxygen is a colorless gas that is essential for breathing and supports life on Earth.