Empirical evidence is information acquired by observation or experimentation. Scientists record and analyze this data. The process is a central part of the scientific method
I think the correct answer is the first option. The key features of chordates would be notochord, dorsal tubular nerve cord, pharyngeal pouches, and a tail. These features appears in some period of their lives. They are deutorostomes where the anus would be formed first before the mouth.
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water is absorbed by the embryo, which results in the rehydration and expansion of the cells.
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If an experiment exhibits reproducibility it means the same results are expected each time the experiment is done.
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Kinda blurry soooo if you can retake the picture it would help a lot :)
