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.
Some famous deserts are the Gobi and Taklamakan deserts in Asia, the Sahara in northern Africa, and the Great Sandy and Simpson deserts in Australia. Deserts can come and go with changes in climate.The Sahara was once green and filled with animals, as portrayed in wall paintings in its sandstone monuments.ome famous deserts are the Gobi and Taklamakan deserts in Asia, the Sahara in northern Africa, and the Great Sandy and Simpson deserts in Australia. Deserts can come and go with changes in climate.