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What does extinction mean?
The complete disappearance of a species.
How can climate change contribute to species extinction?
It alters natural habitats, making them unsuitable for certain species.
What human activity is the primary cause of deforestation in the Amazon Rainforest?
Agriculture
What major event 2.4 billion years ago led to the decline of anaerobic microorganisms?
The Great Oxygenation Event.
What is one way humans can help prevent extinction?
Habitat conservation.
What is the name of the current biodiversity crisis caused by human activities?.
The Sixth Mass Extinction.
What natural disaster, occurring 74,000 years ago, caused a volcanic winter?
The eruption of Mount Toba.
What pesticide was responsible for thinning bird eggshells and declining bird populations?
DDT.
Which extinction event, 66 million years ago, was caused by an asteroid impact?
The Cretaceous-Paleogene Extinction.
What is an example of a critically endangered species today?
The Javan Rhino.
What is the name of the event that wiped out the non-avian dinosaurs?
The Cretaceous-Paleogene Extinction.
What fungal disease has caused a massive decline in amphibian populations?
The Chytrid fungus.
What type of species, when introduced to a new habitat by humans, often outcompetes native species?
Invasive species.
What extinction event 252 million years ago wiped out the majority of life on Earth?
The End-Permian Extinction.
How does pollution contribute to species extinction?
It contaminates ecosystems, harming wildlife and disrupting food chains.
What species was hunted to extinction in the early 20th century?
The Passenger Pigeon.
What historical events caused drastic biodiversity loss due to long-term climate shifts?
Ice Ages and droughts.
What invasive species has caused multiple bird extinctions in Guam?
The Brown Tree Snake.
What extinction event, occurring 445 million years ago, mostly affected marine invertebrates?
The Ordovician-Silurian Extinction.
Why are some species more vulnerable to extinction than others?
They have low genetic diversity, specific habitat needs, or small population sizes.
What is the primary factor that makes cheetahs more vulnerable to extinction?
Low genetic variability.
What percentage of marine species were wiped out during the End-Permian Extinction?
96%.
What term describes the overuse of natural resources, leading to population declines of various species?
Overexploitation.
How does modern human activity compare to past mass extinctions in terms of biodiversity loss?
Human activity is causing species loss at an accelerated rate, often referred to as the Sixth Mass Extinction.
What is the name of the extinction event that allowed dinosaurs to dominate after many reptiles and amphibians went extinct?
The Triassic-Jurassic Extinction.