Answer:
Aspect, Biological
In summer, when the trees become covered with foliage and cast shade on the ground, the grass cover loses some of the variety of flowering plants, certain spring flowers end their vegetation, and the grasses become duller and monotonous in color.
Hope this helps, have a great day/night, and stay safe!
I think it might be hormones not sure.
Yeah, since it's legal to treat one without a licence :)
Knowing planes, body positions, directions and such can help people locate areas on the body more easily and precisely. One occupation could be a forensic pathologist who need to identify main points of interest on a body