Amoebas, like human beings, generally withdraw from stimuli that cause them physical damage  Humans do this because such stimuli cause them pain
Thus all microscopic organisms must also be capable of feeling pain
Hiking trails in British Columbia, like those in New Mexico, are concentrated in mountainous regions. In New Mexico this is partly because low-lying areas are too hot and arid for comfortable hiking. Thus hikers must also feel less comfortable hiking in low-lying areas of British Columbia.