Answer:
The Governor of your state
It is false that r<span>elationships, once invented and defined, cannot be reinvented and redefined.
Take a look at this banal example:
You've been in a relationship with a guy or a girl for many years - your relationship is established already as you love each other. But one day, they cheat on you. Obviously, your relationship with them is going to change, usually for the worse, until, often, some day, there is no relationship at all anymore.
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I believe the answer is: <span>. Agriculture did not develop until the climate changed to become more stable.
Each agricultural plants require a specific temperature in order to ensure its survival. Instability of temperature that caused by climate change would make it difficult for the plants to enable their biological function which diminish their rate of survival.</span>