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Extinction
Death of all members of a species.
Vulnerable Species
Likely to become endangered soon.
Endangered Species
In danger of extinction if threats continue.
Extinction Events
Major occurrences where multiple species go extinct.
Mass Extinction
Widespread and rapid decrease in biodiversity.
Australian Megafauna
Giant animals from Australia during the Pleistocene.
Pleistocene Epoch
Period from 1.6 million to 10,000 years ago.
Climate Change Theory
Climate shifts led to habitat loss for megafauna.
Human Arrival Theory
Humans hunted larger animals, leading to extinction.
Nutrient Depletion Theory
Low soil nutrients favored smaller animal survival.
Biotic Factors
Living components affecting species survival.
Abiotic Factors
Non-living components affecting ecosystems.
Mass Extinctions Count
Five mass extinctions recorded in Earth's history.
Current Extinction Crisis
Possibly the sixth mass extinction due to humans.
Eucalypt Forests
Forests less efficient at retaining water.
Madjedbebe Site
Evidence of human hunting of megafauna.
Dwindling Resources
Limited food and water leading to species decline.
Survival of the Fittest
Species evolve based on environmental adaptability.
Ice Age
Period of extensive glaciation affecting ecosystems.
Catastrophic Events
Sudden occurrences causing mass species extinction.
Evolution of Species
Changes in species over time due to environmental pressures.
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