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What percent of vertibrates are on Earth?
Vertebrates comprise approximately 3-5% of all known animal species on Earth. While there are around 66,000 recognized vertebrate species, the majority of animal species are invertebrates, which make up over 95% of the total. This highlights the immense diversity of life forms, with invertebrates vastly outnumbering their vertebrate counterparts.
What kind of life was there on Earth after the dinosaurs went extinct?
God of course
How many extinctions has earth experienced in its history?
Mass extinctions--at least two--one at the end of the Permian, and one at the end of the Cretaceous, with numerous other less severe events. As far as the extinction of individual species, that list would cover millions of extinct organisms.
How was earth before humans?
Forests, plants, trees, deserts, grassland, marshes, lakes, rivers, streams. Anything man-made was not here. There were many plants and a lot of green. As we colonized the earth we tore down forests and build homes. The oceans haven't changed much, but the atmosphere has. Since the industrial revolution or even since the first fire by cave men for the matter, we have been polluting, slowly killing life. Obviously, we are at the top of the food chain and, so, many species have become extinct and endangered by us.
What do the earth has?
it has species,humans,and most of all the nature
What If all members of a species disappear from Earth the species is said to be?
The species is said to be extinct.
Why is it so common for species on earth to become extinct?
Its part of a naturally occuring cycle.Mankind however seems to have quickened the demise of certain species due to his abuse of Planet Earth.
What are the threats caused by human activity to a sea lion?
This could kill all the sea lions present in the sea , In the end it will become extinct , Now the meaning of extinct is as follows : Species that are no longer present on earth is called extinct species .
How do you save extinct species on our planet earth?
You can't. If a species is extinct, that means that no organism in that species is alive. It is gone forever.
What is the difference between threatened and extinct?
Extinct means that there are no longer alive and completely dead, the whole species is dead and are no longer on earth alive. But threatened means that they are on the edge of being completely dead.
What percent of endangered species end up extinct?
It can be assumed that, eventually, 99.9% of endangered species will end up extinct. This is because, according to scientists, 99.9% of species that have ever existed on the Earth have become extinct.See the related link for more information.
How could plate tectonics have caused some species to become extinct?
Plate tectonics cause earthquake which may result into upheavals of earth perishing the living objects that become extinct in due course of time.
When no living member of a species exist the species?
When no living member of a species exists, the species is considered extinct. Extinction occurs when a species has completely disappeared from the Earth, with no individuals remaining alive anywhere in the world.
A species that once lived on earth but is no longer found alive is called?
Extinct is when an animal or plant doesn't exist any longer on earth.
Ratio of extinct species to living species on Earth is about?
1,000:1
What percent of species that existed on earth have gone extinct?
It is estimated that 99% of all animals that have ever lived are now extinct.
How many different life forms is on earth?
There are estimated to be over 8.7 million different species of plants and animals on Earth, but this number may vary as new species are discovered and existing ones become extinct.
