The amniotic egg was a successful adaptation primarily because

The egg of the amniotes are surrounded by the set of the fluid membranes known as amnion. The fluid present inside the amnion is known as amniotic fluid.

The evolution of the amniotic eggs removes the danger of the desiccation of the eggs. This fluid provide the nutrient to eggs and protect the embryo from the physical danger. The egg shell of the amnion allow the transfer of the gases in the developing embryo.

the wires in the toaster turning red and the toast crisping and turning brown

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: