I suppose it depends on what you mean by affecting the lives of millions of people. In most cases, I would say the answer is still yes, unless for some reason the outcome of the effort would be catastrophic. But there are a number of species that are endangered because they are being overhunted or overfished for food when it might be possible to gather food more sustainably, and others that are poached for luxury goods for humans. Changing the practices that cause those problems would affect large numbers of people, but not in a catastrophic way. Meanwhile, the outcome of a species dying out could have unintended consequences. Each species is involved in the food web somehow, so removing one species could mean a drastic rise or drop in the population of another, which could potentially have a noticeable negative impact on humans.
That’s a tough question and one that every environmentalist needs to think about. One of the chief reasons for protecting the environment is to preserve its beauty and resources for future generations. But if this protection and stewardship comes at the price of significantly harming the present generation then we have to consider whether its worth that risk. Some examples regarding endangered species may be completely eliminating a deadly variety of mosquito by draining swamps, or destroying the habitat of a certain rare bird in favor of creating necessary farmland.
I am not sure exactly what you mean by “effect on lives of millions of people”.
Majority of extinctions that are caused by humans happened due to overhunting, overfishing, and destroying the environment on which species depend. If we are somehow able to restrict people from hunting specific species, fishing certain areas, and prevent destruction of nature for construction or for grazing cattle, I do not believe that MILLIONs of people would be affected in a catastrophic way. It is possible that some people will go hungry and may be even starve, but let us look at the big picture.
We have 7 billion people on the earth. Humans will not go extinct. Species that go extinct never come back. Let us think of 1000 years from now. Sure, it is sad and devastating that 1 million people died, but there would still biodiversity and lots of species being preserved.As opposed to 1000 years from now, only having animals at zoos, and the environment overwhelmed and weak.
As a response to sfcharles examples, may I remind you that there is an ecosystem that is codependant. You drain swamps and you will watch many other species be effected; same with destroying the habitat of a bird. You cannot target or contain the effect of extinction.
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