For millions of years, Earth's living beings have adapted their biological processes according to two fundamental astronomical cycles: succession of seasons and day-night alternation. Since the perception of both phenomena is unequal according to latitude, the different species have accommodated to the singularity of both cycles in their habitat. Any disturbance in one of them would give rise to distortions whose scope we do not know, but which would certainly lead to the extinction of some species and the appearance of new adaptive demands for others.