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.
Loss of Arable Land. Arable land is any land that can be used to grow crops. Many of the practices used in growing those crops can lead to the loss of topsoil and destruction of soil characteristics that make agriculture possible.