WhiteWinterRose
16.12.2019 •
Biology
The digestive system’s purpose is to break down food, extract the nutrients needed by the body, and eliminate waste. which of the following structures is crucial for the digestive system to function?
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Ответ:
Option- (B): Amphibians, mammals, and birds.
Explanation:
Common Ancestry linkage
As amphibians were the first to evolve and develop themselves as a more complex form of life. While the mammals and birds are said to be evolved from the amphibians, as both them they covers there embryos inside a sheet or a specific protected layer around there embryo. Which terms them as amniotes.