- The air travels into the windpipe - The windpipe divides the air to the two lungs via the bronchial tubes - The lungs oxygenate the blood in the body - Carbon dioxide is filtered out by every cell in the body - The carbon dioxide is carried back to the lungs via the bloodstream - The carbon dioxide is exhaled. What might be the first step of the process?
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Answer: Air is taken into the body via the nose or mouth

- Oxygen moves from the lungs into the bloodstream - Air is pushed through the vocal chords - A person talks - Other air is pushed out of the lungs into the environment. What might be the first step of the process?
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Answer: Air is pulled into the lungs

- The energy from the sunlight causes an enzyme in the plant to break apart the water - The water breakes into oxygen, hydrogen, and electrons - Hydrogen, along with electrons energized by light, converts NADP into NADPH - Oxygen diffuses out of the plant as a waste product of photosynthesis - What might be the first step of the process?
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Answer:
Sunlight hits chloroplasts in the plant