natural and man-made factors(As stated in this article " the increase in hydro-meteorological disasters is due to a combination of natural and man-made factors" | Many natural and man made factors (e.g. glacial melt waters, farming and settlements), have influenced how we see North Hertfordshire's landscape today Alexander Demidov)
ecofact(Object not made by humans, but indicating the presence of humans at a site, e.g. bone, shell and seed. Garbage can be considered ecofact if it is not modified by humans, otherwise the garbage is considered artefact. Found on abc.seAlexander Demidov)