Oxygen has 8 protons
8 + 7 = 15
This isoptope is O-15
It is a physical change because only the states as being changes, not the actual bonds in the compound.
Answer:
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Explanation:
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The lithosphere is divided into large tectonic plates.
The major plates include the North American,Antarctic ,African ,pacific,
European,South American and the indo-Australian. Each plate consists of dense organic material as well a less dense crust material.
(The answers are in the paragraph)
