Answer :
Moving from the sea to the land presented difficulties for animals as they developed. The most crucial adaptation was the ability of amniotic eggs to separate the need for an aquatic environment from reproduction.
An egg that breathes air and has extraembryonic membranes and a shell is an amniotic egg. These allowed for gas interaction with the surrounding environment while keeping the amniotic embryo in a private pond during development. They liberate creatures from reliant on pools of water for development and the larval stage with Reduce competition for water bodies where larvae can grow and prevent aquatic predators from preying on larvae.
The embryo, yolk, and other membranes present in the amniotic eggs are enclosed by three extraembryonic membranes known as the chorion which helps the exchange of gases with the outside, the amnion that protects the embryo, and the allantois, which takes in the nitrogenous waste products produced by the embryo.
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