Per capita income is the measure of the amount of money earned per person a geographic region. The formula is total income of area divided by the total population.
Gorges are narrow/skinny valleys between hills or mountains that often have a stream or river running through it. Waterfalls are rivers that stop and drop vertically into another body of water.
Hope this helped :)
The soil layers are, in order: dirt, humus, rock. So the answer is D.
1.) Coastal environments, deserts, mountain environments, savanna grasslands, and forests.
2.) Each ecosystem has a different climate and people and animals who have adapted to these climates differently than the other environments. Each environment has its own resources there that the other might not have for them to survive.
~Anything you say huh, well I say sleep well tonight!
The answer is C. Steel.
Steel is made from humans, the others are minerals.
