What would the seasons be like if the Earth were tipped over on its axis by 90 degree?
It can only be speculated that the effects of this tip in axes will only slide climates to different positions 90 degrees from where they once were. Some say that it'll cause Earth to fall into catastrophic weather mode where everything is devistating. 500mph winds... ahhhhhhhhhhhhhhhhhhhh!!!!!!!!!!
If the Earth's axis were tipped 35 degrees relative to the pole of the ecliptic which effect would be seen?
If the Earth were tipped 30 degrees from the ecliptic instead of the 23.5 degrees that it really is, the tropical zones would be a little larger, and the near-polar weather would probably be a little more extreme than it is. The seasons might also be a little more severe, but I really would not expect that much difference.
If, after this stage, suddenly we don't have seasons, life on earth will end. Because, as you know, that life on earth is a cycle. Everything needs everything to live. So, if there are no seasons, which is practically not possible, then the life will end. And if from beginning of time, the earth wouldn't have had seasons, then life on earth would have molded itself to the change or climate.