Why is earth's position in the solar system unique for life to exist?

Earth's Position In The Solar System Is Unique For Life To Exist Because The Sun Is Hitting It In A Perfect Position Meaning It Doesn't Have Too Much Sun , Which Can Dry Out The Planet &' Doesn't Have Very Little Sun That It Will Become Freezing . Humans Or Any Living Creature Cannot Live Where Their Is To Much Sun They Can Possibly Die Of Hydration . They Cannot Life Somewhere To Cold Because They Can Freeze To Death . This Is Why Earth's Position Is Unique . Bonus : Scientist Say Its Possible For Mars To Have Life Because Its Not Too Close Nor Far Away From The Sun , In Fact Its Very Close To Earth . In My Opinion , I Think Anything Is Possible !