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What evidence do we have that many species evolved from a few ancestral species?
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How do fossils give proof of evolution?
Fossils show clear evidence that the earliest human species had many apelike features & have evolved over the years.
What effect does reproductive isolation have on species?
It leads to speciation. many species in nature have evolved by this method.
What is a single species that has evolved into several different forms that live in a different ways that undergone?
One example is the cichlid fish in the African Great Lakes. They have evolved into numerous species with diverse body shapes and feeding strategies to exploit various niches in the lakes, such as herbivores feeding on algae or predators preying on other fish. This adaptive radiation showcases how a single ancestral species can give rise to multiple specialized forms through evolution.
What evidence did Darwin use to create his theory?
Bird beak sizes, many birds of the same species had different size beaks to pick up different size foods, thus suggesting they 'spontaneous' evolved
The evolution of ancestral species into an array of many spices that occupy diffret habitats?
A radiation event. Called adaptive radiation.
Many organisms in the Galapagos have evolved to become new species with the help of?
Isolation from the mainland.
How could two species that evolved on different continents have many similarities?
A common ancestor.
Who said humans evolved from a primate?
Many scientists have said so based on the evidence they found.
Why were the Galapagos islands so important to Darwin's observations?
During Darwins visit to the Galapagos island he observed that these islands had many unique organisms, most of which were similar to but different from the plants and animals from the nearest mainland.... thus this indicated how population evolved. Darwin called this "descent with modification" meaning an ancestral species could diversify into many descendant species by the accumulation of adaptation to various environment. His observation described the theory of evolution.
What are the implications of asexual reproduction in the evolution of species?
Answering "http://wiki.answers.com/Q/What_is_advantage_of_asexual_reproduction_for_a_population_of_organisms"
How many species have died out?
Everything beyond single cell organisms have evolved (and some of those have too!).
What did Darwin observe in the finch population that supported his of natural selection?
Darwin observed that on the island, there were many finches, but each one of them were slightly different.Darwin noticed that beak shapes and sizes differed among the finches. This led him to believe that finches evolved differently in response to different environments.The variation in beak size and body size that showed, at a latter date, that all of these birds he thought were vastly different species (wrens, warblers and such ) were one ancestral finch species adapted to many different niches on the many different Islands of the Galapagos.
