Why is an aardvark a good metaphor for the activities of a farmer? What might be the purpose of combining several animal features?

Hello. You did not enter the text to which this question refers, which makes it impossible for it to be answered accurately. however, I will try and help in the best possible way.

It is likely that the author of the text has many characteristics of animals, to establish a connection between the farmer and life in nature, showing him as a composing element of nature that is able to survive through it, as well as animals. Comparing the farmer with an aardvark, shows how the farmer, like this animal, manages to survive arid and dry environments, treating the land appropriately to be productive and eliminating pests that can harm it.

changeable lenses of different focal lengths allows light to enter the camera,which then forms the image on light-sensitive film;

for many centuries, the catholic church has been a patron of the arts. the church has used various scientific methods to maintain its power.

not 100% sure though!