What are the three factors the study of population focuses on?

In regards to population growth, geographers emphasize three elements: population size; the rate of increase in the world population; the unequal distribution of population growth. Geographers seek to explain why these patterns exist.

i think its toxic gasses but i could be wrong

the minoan civilization flourished in the middle bronze age on the island of crete located in the eastern mediterranean from c. 2000 bce until c. 1500 bce. with their unique art and architecture, and the spread of their ideas through contact with other cultures across the aegean, the minoans made a significant contribution to the development of western european civilization as it is known today. labyrinth-like palace complexes, vivid frescoes depicting scenes such as bull-leaping and processions, fine gold jewelry, elegant stone vases, and pottery with vibrant decorations of marine life are all particular features of minoan crete.  

so basically their unique way of ding arts, as well as architecture.