Finally we,ve watched with curiosity the rivers crabs,but we,ve love unfinish the Portus river.And
ever mentioned the river sure than we,ve must account too much the influence of the moon.
And then a so serius influence both in freswater and salt watter.The moon than we must learned to deduce the freshwatter and the aperture of the earht.Howewer we would abstract =
= Time elapsed at the opening of the earht =
= movement of rotation of the moon x
megasphere aperture /
/ time in the movement of nutation of the earht.