This isn't really a topic that can be answered true or false.
Technically speaking, everything is some combination of the same elements, so in that respect, everything is connected. However, the Earth is not physically connected to the Sun. It is held in place by the Sun's gravity.
If you're talking about connections to people, then that statement isn't true or false either. The daily activities of a single person in say, Africa, do not affect my life in any way, just as mine don't affect theirs. However, what my neighbors or coworkers do can affect me.
Of course you could consider the "butterfly effect", where the wings of a butterfly fluttering causes a chain of events that lead to a tornado somewhere else in the world. Although, that's just a theory and it hasn't been proven.
Definitely a loaded topic.
 Kynlei
                                                
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                                                Jan 3, 2019
                                            
                                                
                                                    Kynlei
                                                
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                                        I am not, never have been and never will be connected to Donald Trump or spiders.........ok well maybe spiders.
 MsDemeanour
                                                
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                                                Dec 31, 2018
                                            
                                                
                                                    MsDemeanour
                                                
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                                        Not only are we connected. Our true and real essence is one single thing IMO. Identity as a body is only an illusion.
 WilliamFleming
                                                
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                                                    WilliamFleming
                                                
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                                        @maturin1919 “You” are not thinking anything. Thinking is a bodily activity. You/We are in blissful repose, enjoying conscious awareness and playing with our multitude of state-of-the-art robotic organisms. 
Not me and my ex.
 Sticks48
                                                
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                                                Dec 31, 2018
                                            
                                                
                                                    Sticks48
                                                
                                                Level 9
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                                        Durr that's why she's your ex! smart guy. 
You used to be
Sorry, too broad; depends on your definition of "connected".
 Geektheist
                                                
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                                                    Geektheist
                                                
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                                        The assertion is to general for a yes or no answer
 LenHazell53
                                                
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                                                Dec 31, 2018
                                            
                                                
                                                    LenHazell53
                                                
                                                Level 9
                                                Dec 31, 2018                                            
                                        "We are all connected; to each other, biologically. To the earth, chemically. To the rest of the universe atomically. We are not figuratively, but literally stardust.” Neil DeGrasse Tyson.
How far can the concept 'everything is connected' be stretched and proven?
 ASTRALMAX
                                                
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                                                Dec 31, 2018
                                            
                                                
                                                    ASTRALMAX
                                                
                                                Level 8
                                                Dec 31, 2018                                            
                                        The Butterfly effect. In science we recognize the interconnectness of all things. The ripples my be undetectable, but they persist and get translated down the line. Sometimes ultimately go nowhere, sometimes catalyst for large changes.
 t1nick
                                                
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                                                Dec 31, 2018
                                            
                                                
                                                    t1nick
                                                
                                                Level 8
                                                Dec 31, 2018                                            
                                        If they are undetectable how can they be proof. Evidence please.....
Hmm! Not too sure about the 'butterfly effect' because on that scale if an elephant farted in Africa it seems to me that there might be an earthquake and Saudi Arabia, Iraq and Turkey would feel the aftershock with possible ripples felt in Europe.
@ASTRALMAX, @kgoodyear. Many things are not immediately discernable by us. However, observations by multiple researchers over a multiple centuries, patterns emerge. Disparate events and data are brought together to realize the connections. Not all connections are overtly seen or apparent. We know they are at work because we can document changes and work bsckwards to reconstruct events. Sometimes the evidence is tangentjal and not always recognizable at first.
An example: taking am organism out of its biome or habitat impacts the entire boome. Changes potential events and possibilities. We may not be able to see or realize the chsin of events resulting from this. but changes did occur. It at the wrong time or at a tipping point., outcomrs msy be readily visible.