Constructive Earth processes are changes that add to the surface of the Earth, and some of them take millions of years to occur. While, destructive forces break down land.
I guess you forgot to mention the options which were
<span>Who is Sigmund Freud?
</span><span>Who is John Watson?
</span><span>Who is Hippocrates? and
</span><span>Who is Carl Rogers?
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And the correct answer is Hippocrates, who was the first to study the mental illness.