Competition among the animals IS for survival
Competition is a struggle between animals and plants to survive when resources are scarce. Therefore, when resources are too rare, animals will end up killing their own kind to survive. This can sometimes lead to massive population drops over a wide area.
yes
by the pollution
no
Environmentalists study the environment. They study things like how humans cause changes that negatively impact ecosystems and survival of the animals within those ecosystems.
Impact Stories of Survival - 2002 Canyon Crash 2-4 was released on: USA: 2003
Impact Stories of Survival - 2002 Avalanche 2-9 was released on: USA: 30 April 2004
Humans have a major impact on animals. Humans have been responsible for the domestication of many, many animals such as dogs, cattle, sheep, goats, etc (an exception is cats who are generally have thought to have, true to their independent nature, domesticated themselves) and used them for work purposes and as pets. With many animals, such as both cats and dogs, humans have used genetic mutations or differences in appearance and temperament to create entirely new breeds. The activities of humans on the habitat of some species of animals has a big impact on populations of species or entire species themselves. Humans have been responsible, in many cases, for habitat loss through farming, deforestation, and converting forests to pastureland for cattle. This in turn leads to a smaller area that many species can inhabit, which leads to greater competition between members of the same species as well as between members of different species for food, territory, and other resources. That competition causes the population of one or more species to decline and they can become endangered, or in extreme cases, extinct. Humans also negatively impact animals through poaching, especially for fur and body parts. In recent years, as humans have realized the impact we have on the environment and the plants and animals in it, we have begun to try to better conserve animals and their habitat through many, many types of programs.
Impact Stories of Survival - 2002 Chariot Crash 3-3 was released on: USA: 29 November 2004
Impact Stories of Survival - 2002 Parachute Collision 1-2 was released on: USA: 8 July 2002
Impact Stories of Survival - 2002 Building Collapse 2-10 was released on: USA: 14 May 2004
Impact Stories of Survival - 2002 Dragster Disintegrates 3-6 was released on: USA: 7 February 2005