How do you tell if an egg is fertilized without cracking it?

Online Answer
You can tell whether the farm egg you just cracked open for your breakfast is fertilized or not. Examine the egg for the germinal disc, a white spot floating above the surface of the yolk. The germinal disk of a sterile egg contains only the hen's cells and is fully white in color.
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Although not a perfect test, your senses are usually the most reliable instruments to tell if your foods have gone bad. The first signs of bad pizza are a hard and dry texture, still safe but not too tasty. A spoiled pizza may also give off a rancid odor and become moldy if left too long.
Freshly cooked chicken will have a brown or white color to the meat, and, over time, as it spoils, cooked chicken looks grey, or green-grey. Other signs of spoiled cooked chicken are a bad, offensive smell, a chicken that's slimy after cooking, and mold or white spots on cooked chicken..
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