When a scientist carefully examines any quantities repeatedly, they actually expect * A. All measurements are just as accurate.
B. Only two measurements will be accurate.
C. All but one measurement will be the same
D. All measurements are almost but not the same​

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Explanation:

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.