Answer:
1
Explanation:
Mostly because it was the BIGGEST thing that really happend during said event. The others happend yes but not as majorly as number 1.
The water will move out of the fish by osmosis due to existence of concentration gradient .
The monomer of carbohydrates, monosaccharides.
The phenomenon is called an equinox. More specifically when it is September it is called the autumnal equinox ,and when it is March it is called the vernal equinox. Hope this helped!