There is prima facie evidence that biological structure is dependent on the Earths geomagnetic and geoelectric fields (GMFs and GEFs). There are pygmy species born near the Tropics and species of small humans found on an island in Indonesia? Inuit tribes and tribes in Africa do follow the trend. Same with trees and maybe plants.
It makes sense, but I think the effect of the gravitational field is stronger and would dominate the effect. There are studies that show we are taller in the morning after 6-8 hours lying horizontally with gravity acting perpendicular to our "height". I believe the same is true for astronauts when they return from space due to the reduced gravitational force acting on their bodies (the spine is decompressed).
Hi Alex
Yes I agree especially about the astronauts. There's several factors at play including the Sun and the Moon in relation to the Earth.
Given the Sun's and Moon's orbits are over the equator than the poles, there will perhaps tend to be a factor in the overall growth of biological systems that are responsive to these gravitational factors that depends on the geoposition.
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