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