Գլոբալ տաքացում

Ինչ է պատճառում գլոբալ տաքացումը?

  1. some gases produced by animals
  2. energy
  3. pollution from vehicles, cfcs, industries that emit smoke, and the increase in co2.
  4. no single actor causes global warming. contributing factors are mostly related to greenhouse gases increasing proportionally in the atmosphere as a whole. human contributions to this are important, if for no other reason than that they tend to push the system toward an ever-increasing temperature rise and increasing concentrations of greenhouse gases.
  5. it's a hoax.
  6. human production of greenhouse gases, and possibly natural environmental cycles.
  7. change in global cycles
  8. pollution from cars and factories.
  9. people live.
  10. pollution ... factories etc.