# 1 , sustainable society , heterosexual population , for population growth
<span>#2 sustainable society , capitalism economic system , for economic growth </span>
<span># 1 nonsustainable society , homosexual population , once aged out , gone . </span>
<span>#2 nonsustainable society, socialism economics , eventually , you run out of other peoples money </span>
For natural selection to happen <span>there must be genetic variation in the population for it to even work</span>
Troposphere should be the answer
Ptolemy's model had Earth at the center, and the moon's revolved around the planets instead of the planets revolving around the moon and sun. The planets' orbits' moved instead of the planets as well. Geocentric has Earth at the center and heliocentric has the Sun at the center
The ability to analyze DNA via DNA sequencing and other molecular analysis techniques has made it easier to group molecules into categories that represent lines of phylogeny.
Phylogeny is based on similar physical and genetic characteristics between organisms. Before such techniques, scientists were able to discern and group organisms only on the basis of their morphology, or their physical shape or appearance.
