Extinction and Biodiversity Flashcards
It is the complete disappearance or the last identified individual of the species that has been extinguished or no longer existing permanently.
Extinction
What are the five major mass extinctions?
Ordovician extinction, Devonian extinction, Permian extinction, Triassic extinction, and Cretaceous extinction
It is when a catastrophic event happens that has decimated life on Earth.
Mass extinction
It is the first mass extinction where the temperature is fluctuating because of the two main phases during this time.
Ordovician extinction
What are the two main phases during the Ordovician Extinction?
Glaciation and Heating Events
During this period, land plants developed deep roots that released nutrients into the ocean.
Devonian Extinction
This mass extinction is considered as the deadliest one because 96% of life back then was lost.
Permian Extinction
This mass extinction was in the atmosphere due to volcanic eruptions that resulted in global warming and ocean acidification. Roughly 80% of life was lost.
Triassic Extinction
This mass extinction was said that an asteroid hit Earth in the Yucatan Peninsula, Mexico, and wiped out all dinosaurs along with roughly 60% of all life on Earth.
Cretaceous Extinction
These decrease the levels of oxygen in oceans and lakes.
Algal Blooms
Biodiveristy comes from two words bio, which means ______, and diversity, which means ________.
(1) life, (2) variety
It is the variation of living forms within an ecosystem.
Biodiversity
What are the four factors that threaten our Biodiversity?
Habitat Loss and Fragmentation, Introduced Species, Pollution, and Overexploitation
It is a place where an organism lives.
Habitat
It is where the habitat is fragmented or divided into smaller areas.
Habitat Fragmentation
