Post on 16-Feb-2017
Climate Change• Alternate heating and cooling of Earth• The Biodiversity of Earth and cannot
keep up with the rapid changes of temperature and climate, that may lead to the extinction of animals.
Changes in Sea Level or Currents
• It is the rising and lower of the sea level
• It has a huge impact on marine life• It could disrupt weather patterns that
could affect terrestrial life
Asteroid or Comet Impact
• An impact from an enormous asteroid or comet could disrupt the food chains
• It also produces dust and other particles that could prohibit photosynthesis
• It could also cause earthquakes, mega-tsunamis and forest fires
Hydrogen Sulfide Emission
• Hydrogen Sulfide – A colorless, flammable and poisonous gas used in paper and pulp industries
• It can be caused by deep-water sulfade bacteria
• Can poison life on both land and sea
Gamma Ray Burst• A nearby gamma-ray burst that is 6000
light years away can affect Earth• It is powerful enough to destroy the ozone
layer of the Earth• It would expose the Earth from the sun’s
ultraviolet radiation
Geomagnetic Reversal
• It is the magnetic reversal of the Earth’s magnetic field
• It can weaken the Earth’s magnetic field• It can expose the Earth from the solar
winds coming from the sun• It can result to a disastrous drop of oxygen
on Earth
Disease or Epidemic• With the changing of the climate and the
landscape, organisms are losing the ability to defend itself from harmful diseases or epidemic
• They can be now affected by the diseases• This can lead to their own extinction