There are two kinds of neurotransmitters â INHIBITORY and EXCITATORY. Excitatory neurotransmitters are not necessarily exciting â they are what stimulate the brain. Those that calm the brain and help create balance are called inhibitory.here are two kinds of neurotransmitters â INHIBITORY and EXCITATORY. Excitatory neurotransmitters are not necessarily exciting â they are what stimulate the brain. Those that calm the brain and help create balance are called inhibitory.
The largest desert in the world is the interior of Antarctica. This has an area of about 14,000,000 km2 (5,400,000 sq mi). Rainfall in the Antarctic interior is extremely low, down to 20 millimeters (0.8 in) per year. This is partially because it is so cold that all liquid water quickly freezes solid and joins the ice pack.
Sahara Desert. The Sahara Desert is the largest non-polar desert in the world. It is located in North Africa an is nearly as large as Europe or the United States. The name Sahara comes from the Arabic word for desert, sahra.ome of the world's largest deserts are cold deserts located at one of the Earths poles or in a cold area of the world. One thing is for sure, deserts are dry and barren places. Go here for more information on the desert habitat.