Here is a list.
* The Market Economy
* The secondary industry
* Culture
* birthrate
* economical/economic activity
* and soooo much more!!!
* Just google it.
I think the best answer would be C because in ap human geography they face resource problems.
The Sun is a main - sequence star, and thus generates its energy by nuclear fusion of hydrogen nuclei into helium. In its core, the Sun fuses 620 million metric tons of hydrogen each second.
