What would happen if all humans disappeared?

At present there are 7.7 billion people living in this world as per November 2018 survey, and also we have created many evidence and what would happen if all humans disappeared from world. These were the predictions this could happen if all humans disappeared from the world.

   

     1)    Vehicle Crash

                                       

      If all humans disappeared the vehicles which are used by humans begin to crash with each other and flights which are flying begin to fall towards the Earth.

     

     2)    Power Shutdown

                                           

      Within few hours after human disappear the entire power supply will shutdown and every electrical powered devices will begin to shutdown and the world will be dark at the night without power supply also the power generating stations such that wind turbines and solar plants also hydro power plants will begin to shutdown.

     

     3)    Nuclear power plant

                                          

     Nuclear power plant are designed to shut down automatically and cool down without human intervention but it also need proper maintenance if not the backup security measure last only for week after that the nuclear power plants results in exploding and toxic radiation will affect the nearby environment.

    

    4)    Falling Satellites 

                                       

     The satellites which are send by humans to space placed in Earth orbit needs proper maintenance if all humans were disappeared the satellite would fall towards the earth without proper maintenance.

     

     5)    Vegetation in Buildings

      After few years of humans disappear 75% of the planet’s building and sidewalls will cover up with vegetation and there will be vegetation spread throughout the world.

     

     6)    Deserts

     The city which is near deserts will be entirely covered up with the sand and there will no skyscrapers or buildings in the desert cities if humans were disappeared from the world.

  

    7)    Metal Constructions

     After 300 years humans disappeared the metal constructions which are made by humans such that Eiffel tower and steel bridges will begin to crumble down without proper maintenance by humans.

    8)    Healthy world

The Earth vegetation which were before 10,000 years will be retained within 500 years when humans disappeared from world.

    9)    Humans evidence

After 10,000 years humans disappeared there will be constructions and plastics would remain which indicate the human sign so it remains as evidence for human life.  

    

    10)  Plastics

After 25,000 years humans disappeared some of the plastics which were used by humans remain without decomposing  that evidence the human life.

These were the things which could happen if all humans in the world has disappeared from the world. If you think any other possibilities just mention it on the comment.