Why were these clauses probably inserted?

following type of cultural development caused people to want and buy new products on the market :

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without

health and medicine because people are dying from not being healthy or not strong enough medicine