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This is true, but our specie is pushing more species to the brink of extinction then other species are. The current extinction rate is more then a thousand times larger then the background extinction rate which can largely be contributed by humans. This is due because humans have the innate ability to directly or indirectly kill those animals that are at the bottom of certain food chains thus causing the complete food chain to collapse.
The fact that many species, such as rats and jellyfish, are thriving is that they have no natural predator anymore due to the fact that those predators are extinct by us and we are thus dislocating the whole natural ecosystem of those species.
If the humans, as a species, had the will (which they don't) to conserve those species then the extinction rates will go down. The fact that this is not happening shows that humans do not care about natural processes. If they did. these extinction rates would never have been allowed to happen.
I am not sure if a new strain of bacteria have ever pushed a species into extinction but to the best of my knowledge, they haven't. (I'd be more then welcome to be corrected on this) This means that they are not the same as humans who have pushed certain species to the brink of extinction.
Man is in now control to a certain extent of his (and the earth's) own evolution and it is within our means to dictate what lives or dies and becomes extinct.
actually its not all because of us...some things will go extinct or threatened naturally...and we think its our job to help them
THis was said by u Another someone "In general, it is much more difficult to asses extinction events that are separate from the human environment, since we only become aware of an extinction event when it impacts upon us" ur point of view is off. Everything that extincts will affect us in some way. Like for instance if u woud say that the mosquito would go extinct and many beleive it wud not effect us but think about all the things that eat the mossquitos like bats...if mosquito populations cease then the bats wud lower but probably not go extinct but since the populations are low that means less flowers get pollenated by the bats..(bats pollenate flowers in case u didnt know) also if bats #s lower that means and over population of other bugs and that wud lead to more chaos...so everything in the earth is there for a reason...and everything affects EVERYTHING else.
Also i have learned something else from our bio-teacher....should we let other animals die of extinction? becasue we all argue that we need there to be a "natural" amount..but arent we something a natural? We are just another animal...we always think that just becasue we are smart taht we rule and control everything. That is just a dumb human view...in the wild if a specie went exticnt and we didnt have any thing to do with it then wed prolly call it natuaral..but if we casue something to b extinct its not...we are just another animal...we arent the rulers...
Quote from: tony6789 on 03/04/2007 16:48:55actually its not all because of us...some things will go extinct or threatened naturally...and we think its our job to help them As far as I know, this is called the background extinction rate which is now several hundred times smaller then the actual extinction rate that is happening now. This means that the rate at which extinction happens is not natural and the number of extinctions that do happen naturally are almost insignificant compared to present extinction rates.The human species isn't the most abundant species on earth but it is the most globally spread (not taking into account certain microorganisms) we therefore have the most impact on the environment and the extinction rates.