According to the Doppler effect, the sound of a police car siren is louder and high pitched as it approaches the observer.
Answer:
During photosynthesis, plants take the water from the soil, and the carbon dioxide from the air, and they make sugars out of it. When plants have the right balance of water, air, sunlight and nutrients, their cells grow and divide, and the whole plant gets bigger and bigger. And that's how plants grow.
Explanation:
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Multiple choice options aren’t shown
Can you explain the question a bit more too me? Idk I don’t understand it:)
