D) when cells are express different genes
In the early stages the embryos of four different species will look the same .For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth. That what makes them different.
Answer:
Argon- a chemical element
Water- polar molecule
Nitrogen- chemical compound
Uranium- chemical element
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Explanation:
In conclusion B. water is a molecule
1. This process is called translation
2. This process is called transcription
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