Substinence farming is farming food that is just enough to live off of. You don't sell substinence crops.
Commercial farming is growing food to sustain you, and having enough left over to sell.
In both, you grow food and you keep some (or all) for yourself.
<u>Answer:</u>
<em>The investigation of surface landforms, procedures and scene advancement of the Earth. </em>
<em>1. Interdisciplinary Study: </em>traverse with logical orders of <em>sedimentology, soil science, topography, climatology, hydrology, glaciology, structural designing and volcanology. </em>
Geomorphology is the investigation of landforms and scenes on Earth and different planets, and the procedures that shape them.
This order is essentially worried about<em> the disintegration and testimony of shake and silt by wind and water,</em> yet in addition incorporates the production of geography through tectonics.
35% ? The most people live for abou 100 years more or less? And I just took 100 -65 which gives me 35. 35 people are over 65 years (35%)
I would love to help, but it's kinda hard to answer this without a map.
You could message me a picture of the map and i'll answer it when I have time. :)