Different kinds of apples come from when a tree branch acts a little differently than the rest. They might taste different or be more red. This is caused by genetic mutations
Electrons fill orbitals in order of increasing energy from left to right. As the group number increase also the number of valence electorns of each group will increases
Answer:

Explanation:
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In this case, according to the given information, it turns out possible to set up the initial version of the half-reaction as follows:

Now, we assign the oxidation numbers to both nitrogen atoms:

It means three electrons are carried, two water molecules are needed on the left side in order to balance the oxygen atoms and consequently four hydronium ions to balance hydrogen atoms in acidic media:

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Body elements and trace fossils I believe
the answer is hydrocarbons contain 10 hydrogen atoms :D