How are the three types of symbiotic relationships different? similar?

What makes these three relationships similar is that they involve the close and often long-term interaction between different biological species.In mutualism both organisms benefit from the relationship.In commensalism only one organism benefits while the other is left unaffected.
In parasitism one organism benefits from the relationship while the other is harmed

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the