Explain the different structural , reproductive and physiological adaption that have enabled aquatic ancestors to establish on terrestrial habitats
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Adaptation is one of the two main processes that explain the observed diversity of species, such as the different species of Darwin's finches. The other process is speciation, in which new species arise, typically through reproductive isolation. ... All adaptations help organisms survive in their ecological niches.
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Answer:
It is accepted that the fishes has experienced firstly the fresh water. and then slow and steadily moved to the land and to further move to the sea during evolution time.
As the sea and land both are very important for environment the animals start to change the strategies for body fluid so that they protect their body from dehydration in sea as well as at land.
The major acquisition of the water is consumption by sea animals tetrapod's and other animals. There is found a big difference between the aquatic animal and the terrestrial habitat.