Earth’s axis is tilted 23.439281° away from the perpendicular of its orbital plane, which is responsible for producing seasonal variations on the planet’s surface with a period of one tropical year (365.24 solar days).In addition to producing variations in terms of temperature, this also results in variations in the amount of sunlight a hemisphere receives during the course of a year.
Given the immense time scales involved with Earth’s formation, evolution, and eventual destruction, humanity is little more than a very recent development – a proverbial “flash in the pan”, if you will.
But the most remarkable thing about our planet is its diversity.
Not only are there an endless array of plants, animals, avians, insects and mammals, but they exist in every terrestrial environment.
These tilted and eroded layers are Precambrian in age (blue in Figure 1, above).
The geological relationships of the various formations are quite clear.