Collaborative Decision Making (CDM) Welcome to Collaborative Decision Making (or CDM), stop three of your tour! CDM is a phrase that has very broad implications. It is really more a philosophy on how to conduct business between the various components of aviation transportation, both government and industry. There are 24 airlines currently participating in this initiative.
Frequently Asked Dinosaur Questions. Question #11: How many dinosaurs were there? Answer: There are over dinosaur 500 genera (the plural of genus) that have been found, named and scientifically accepted. There are about an additional 100 genera that are dubious (these are frequently referred to as nomen dubium).
The world's 8,240 species of reptiles inhabit every continent except Antarctica. Reptiles include turtles, snakes, crocodiles, and lizards. They can be as small as the dwarf gecko (less than an inch long) or as big as the saltwater crocodile, which can weigh more than a ton.ead more. There are more than 6,000 species of amphibians on Earth, including frogs, toads, salamanders, and newts. One-third of amphibians are threatened with extinction. For most amphibians, life begins in the waterâthe young have gills and lack legs when they hatch from eggs laid in the water.