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.
Humus is present in abundance in this soil. Base exchange capacity is low. Soil is good for agriculture purpose. Valley soils can produce good crops of rice and sugar cane whereas at higher elevations such soils favour the growth of coffee, rubber, tea, cinchona etc.