By the availability of food in plain open. If the main source of food for a certain bird species would be hidden safely in small and hard-to-reach places, then the bird beak would look differently over successive generations, compared to those where food would be easily found on the open.
That normally occurs after you eat green vegetables (Which contain chlorophyll), fruit or food colorings. Its not something to be worried about unless your already very sick, and if you were, you would know it.
the point at which warm air begin to raise before colliding with cold air is 3
Answer:
the reaction was exothermic because the heat dissipated quickly after a mere few minutes.
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