Examine the image. Then use the drop-down menu to choose the correct order for the relative age of the features from oldest to youngest:

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Thermohaline circulation and gyres

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