It specifies what exactly the variations are of whatever population is being examined.
The 3rd Law because the action of the climber pulling on a rope causes a reaction that makes their body go up/lift up.:)
You should expect an endangered species to be more SPECIALIST. Animal species that can live in different types of environment and which can survive on different types of food are called generalist. This type of animal specie can not be easily endangered because they have high level of survival. The specialist animal species on the other hand are adapted to a narrow range of food and environment. Specialist species can be easily wipe out if there food resources is exhausted or if their habitat is destroyed.
As long as you are referring to the green plants aka producers of the food chain/web.
Just think about cancer.. it's uncontrolled cell growth, so mutations in genes can cause cancer by accelerating cell division. As the cells contribute to grow they then develop as a tumor.
