The smaller the lethal dose, the more toxic the chemical; thus, the LD50 provides a way of comparing the toxicities of all chemicals. There are a number of caveats to the LD50 test. Firstly, as mentioned, it is the dose required to kill 50% of the test subjects.
Snowy Remote Area. - This is the biome for the Amur Leopard.- They live in Korea, China, Japan, and Russia.- It is known to adapt to any specific environment if it provides food and water.- It is the only leopard known to live in the harsh, cold winters of the Russian Far East.nowy Remote Area. - This is the biome for the Amur Leopard.- They live in Korea, China, Japan, and Russia.- It is known to adapt to any specific environment if it provides food and water.- It is the only leopard known to live in the harsh, cold winters of the Russian Far East.
The animals featured below are only 10 of the 2,300 species considered critically endangered by the International Union for Conservation of Nature (IUCN). One of the most rare sub-species of leopard, the Amur Leopard is only found in one part of the world. Photo Credit: National Geographic. The Amur Leopard is only found in the Primorye region of Russia. A 2007 consensus counted only 14 to 20 adults and 5 to 6 cubs left in the wild.