Grain farming is done for economic activity and this makes it commercial. It is highly specialized and mechanised. The yield per acre is low so the farms are big. The yield is high per man so little manpower is needed for production. Grain farming is subject to market conditions like climate.
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.
Answer:
d should be a fault and b should be underwater volcano i think
Explanation:
Answer:
The Mariana Trench, in the Pacific Ocean, is the deepest location on Earth
Explanation:
<span>I think it's a. near china, north korea, and south korea </span>
