What are seven unnatural events seen in Act II of Macbeth?

To exemplify the unnatural events in Act II of Macbeth,
one must first define the term "unnatural".  For the purpose of this answer, "unnatural"
will be defined as the
following:

From The Free
Dictionary:
1. contrary to nature;
abnormal
2. not in accordance with accepted
standards of behaviour or right and wrong unnatural
love
3. uncanny; supernatural unnatural
phenomena
4. affected or forced an unnatural
manner
5. inhuman or monstrous; wicked an
unnatural crime
6. Obsolete
illegitimate

Based upon these definitions, one
can assign the seven unnatural events in Act II of
Macbeth.

1. Macbeth's vision of the dagger- he
is hallucinating
2. Macbeth speaks about witchcraft- supernatural
phenomena
3. Lady Macbeth has drugged the guards- inhuman/monstrous
behavior
4. Macbeth kills Duncan- inhuman/monstrous behavior
5.
Macbeth cannot say "Amen"- affected or forced an unnatural manner/not in accordance with
accepted standards of behaviour
6. Lady Macbeth tells Macbeth not to think
about his actions- not in accordance with accepted standards of behaviour
7.
Macbeth's knowledge that he will no longer be able to sleep (he recognizes the fact that
he may go mad)-affected or forced an unnatural manner