The three primary man made factors that cause extinction are as follows:
1. Deforestation, either for developing, farming, or lumber is causing many species to be threatened or even endangered.
2. Overhunting, overfishing, and poaching are threatening many species of animals.
3. Pollution, which can cause trouble ranging from global warming, to toxin induced illnesses, and some animals even get their digestive system totally stopped up by unwittingly eating so much trash. That leads to starvation once there is too much trash in the animal's gut for their to be food
Some are. Most are not
That is unknown.
the Reichstag is one of them
Water and Rock
Some stuff can be free if manmade, although, sooner or later, it will come up in somesort of cost.
Some reasons for the acceleration in extinction rates in recent decades include habitat destruction, climate change, pollution, and human activities such as overexploitation of resources and introduction of invasive species. These factors have disrupted ecosystems and pushed many species towards extinction at an alarming rate.
Most bridges are manmade, built in the location where they are required. Some natural bridges of rock or timber exist in wilderness areas.
Factors that generally cause mass extinction include natural disasters (such as asteroid impacts or volcanic eruptions), climate change, environmental changes, and human activities like deforestation, pollution, and habitat destruction. These factors can disrupt ecosystems and lead to the widespread extinction of various species.
Mass extinction is when many animals go extinct within a short period of time caused by the same variables/factors leading to the mass extinction.
Manmade actually.
Manmade
Sorry, I don't have any answers for What are some energy sources of extinction?