Hunting was a major cause of extinction in the United States in the 19th century. Men would hunt the animals for their meats, skins, and fur.
saying it short.......Westward Expansion.
Humans (Us). We are the cause of biological extinctions. We use natural resources exponentially. As mankind population increases the greater the chance of an increase percentage of a species extinction. All natural life is a cycle, once we disregard its benefits to us and overuse its properties we may find ourselves begging for just the basic mother nature has to offer us.
Us.
Pollution of rivers and streams, and the destruction of old growth forests. The extinction by us of several species through poor management or over hunting.
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If we don't live a sustainable life, planet will not let us live. It will cause extinction.
The reverse of the earths magnetism is not dangerous to humans as we do not rely on magnetism to guide us anymore. It will cause mass extinction of birds though.
Understanding the causes of an extinction can help us prepare for and hopefully prevent a similar situation in the future. The fact that as much as 90% of dinosaur species died out from climate change near the end of the Mesozoic warns us not to allow global warming to get out of hand. Because we know that the death blow to the dinosaurs was the asteroid impact, astronomers keep track of Near Earth Objects, and are formulating plans for deflecting a large asteroid or comet in the event that one heads toward Earth.
One of the major causes of present day species extinction is to be blamed on humans. Humans have taken over land driving out animals. Humans have developed the land without taking care to prevent pollution properly which destroys resources for the animals.
Is it about the oil prices.
The Jaguars were extinc by hunting in the US.
The world isn't going to end. Major difficulties will happen. Nibiru will devestate our planet but not send us to extinction. WW3 will kill many people, but won't kill everybody.
The responses of the US and the UUR did cause a major inclination in the outbreak of the WWII as allies combined.