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Extinct Animals
All the information you need to know about animals that have already become extinct.
1,977 Questions
What is the Sixth Extinction Theory?
According to theory, the extinction started when humans began to disperse across the globe about 100,000 years ago. As population increased, the need for food also increased. As a result people began using agriculture. While humans move across the earth as predators, other species become their prey. The Sixth Extinction Theory says that while people evolve, the world is dying- because our evolution is draining the world's resources. Therefore, the result is that humans are slowly destroying the Earth and we are the cause of The Sixth Extinction.
What are the 8 human activities responsible for extinction of animals and birds?
There have been several extinction events in the Earth's history. Scientists have determined (using data determined from the Earth itself and found using the latest equipment we have been able to manufacture) that some of the major extinction events have been caused by large asteroids colliding with the Earth.
When a large asteroid collides with the planet, the dust and water vapor raised by the collision can occlude the sunlight from reaching the planet. When this happens, the vegetal food (plants) are the first to die. If the occlusion lasts long enough from a major strike, then the animals who depended on that food, dies out as well. Then the animals who preyed on those animals will die out.
Another type of extinction event MAY have happened much more recently in our planet's history.
Scientists have found that as the last ice age was ending, dust from possibly the Sahara desert was blown into the atmosphere, occluding the sun again, causing widespread death to major flora and fauna about 11,000 years ago. Some parts of North America was buried in up to 800 feet of new soil and debris which sifted down on the continent. Animals such as the Woolly Mammoth and the Saber Tooth Cat could have been some of the most recent animal extinctions caused by natural occurrences on the planet.
Whatever keeps being mistaken for said mythical beast is clearly not extinct. What that creature is I do not know.
Dinosaurs are extinct because they could not adapt to the environment during the ice age. The extreme cold and lack of food inevitably killed them.
Who made the first clock and when?
Haha, they couldn't have know the exact time... because before the clock... there was no time :p
What are 2 uses for lead monoxide?
Paint pigment - although we are trying to do away with that as its rather toxic.
Rat poison - ditto.
the answer would be yes because people die due to many causes every year, and 2022 is probably no different. unless, a) human beings as a species go extinct before 2022 or b) scientists develop a miraculous solution to make everyone invincible and immortal that has a 100% success rate
Why did Archaeopteryx become extinct?
In a way no due to it just evolving into modern birds, it was in a kingdom aves (birds) but the exact Archaeopteryx is not a living thing anymore.
How is natural selection at work when a species becomes extinct?
Natural selection occurs when a certain environment favors a particular characteristic or trait over another. With this being said, when a species becomes extinct, this means that that species' particular set of characteristics or traits was not the most favorable for them to survive in that certain environment.
What is the difference between a species that is extinct and a species that is endangered?
A species that is extinct no longer exists anymore. Like the dinosaurs, for example. When a species is endangered, that means there are very few of their kind left on this planet.
What term describe development of new species and mass extinction?
Macroevolution
The development of a new species is called speciation.
What does a megladon tooth look like?
Exactly like the tooth of the great white shark, only much larger. Some found in Mesozoic deposits are 6 inches (15 cm) across the bottom. They are both species of the Genus Carcharodon. The Great White is Carcharodon carcharias, and the extinct Mesozoic monster was Carcharodon megalodon.
Is archaebacteria present or extinct?
Archaebacteria is still present today and not extinct. Archaebacteria is a single cell microorganism and was once classified as bacteria.
Anomalocaris is an extinct genus of early animal. It lived in the Cambrian and is the world's first super-predator.
What are types of primitive bony fish?
If you are doing the cross word, the answer is Sturgeon - one of the oldest bony fish linking to fossils of primitive type. ;-)
What do scientists today rely on primarily to determine evoluutionary history?
Scientists rely primarily on the fossil record to determine evolutionary history. Another way of determination is examining the genetic record.
Was there a bird called Dodo and If so when did it become extinct?
It is not known exactly when the last dodo died, but it was believed to be sometime in the 1680s or 1690s. The dodo was not discovered on the Indian Ocean island of Mauritius until about the 1590s. It was a bird that had no fear of humans, having not encountered them before, so it was easy for sailors to catch and eat, even though most reports of the meat were that it was tough and sometimes unpalatable (usually due to cooking it for too long). It was a flightless bird, and quite heavy - around 20 kg, so it was not believed to be a fast-moving bird, although scientists differ in opinion on this. This meant it lacked the ability to escape terrestrial predators.
When humans settled permanently on Mauritius, they cleared native dodo habitat, destroying nesting grounds. They also introduced various new species, all of which were a threat to the dodo. Dogs and pigs killed the birds; cats and preyed on the young chicks; and Crab-eating Macaques were introduced from Asia - these ate the eggs of the dodo.
How many people have a lizard as a pet?
It is estimated that around three percent of US households have a reptile as a pet. A rough estimate of 640,000 reptiles are kept as pets worldwide.
Why Yolk is absent in human egg?
A bird's egg is a self-contained unit. Everything the fetus needs to grow to birth weight is contained in the egg. The yolk provides the nutrients to bring that single-cell egg to birth stage. In humans, the nutrients are provided from the mother to the fetus by the umbilical cord.
