Sensory" Neuron
"Associative Neuron"
"Motor" Neuron
A small amount of nitrogen is fixed by lightning, but most of the nitrogen harvested from the atmosphere is removed by nitrogen-fixing bacteria and cyanobacteria (formerly called blue-green algae). The nitrogen cycle transforms diatomic nitrogen gas into ammonium, nitrate, and nitrite compounds.
Homeostasis is the stable internal condition of a cell. It what keeps you healthy. Homeostasis happens in the cell membrane so it it were damage, you would have trouble maintaing homeostasis, which could lead to illness, then DEATH
