All neurons can produce chemical impulses and have within them an axon hillock that decides if the impulse will be produced or not. Learn how this dynamic processing center uses incoming signals from other neurons to make its decision.
The land form that would be best for farming would depend on what you're farming. The best type of land for farming crops would be flatland - or plains. In the south the area used for farming is the Piedmont area, the area between the hills and the coastal plains. The land form that would be best for farming would depend on what you're farming.
You are far better off with 5 acres of great soil than 50 acres of mediocre soils. However, you might need a cer-tain critical acreage to produce some crops economically. For example, growing grain on less than 200 acres would not support the purchase of even a used combine.