Glutamic acid is a natural constituent of many fermented or aged foods, including soy sauce, fermented bean paste, and cheese, and is also a component of hydrolyzed protein such as yeast extract. The sodium salt of glutamic acid, monosodium glutamate (MSG), is a widely used additive in the food industry.
Paleontologistâs estimate that only a small percentage of the dinosaurs that ever lived have been or will be found as fossils, because their bodies simply decayed. The word fossil comes from the Latin word fossils, which means, âdug upâ. Most fossils are excavated from sedimentary rock layers. Sedimentary rock is rock that has formed from materials like sand, mud, and small pieces of rock. Over long periods of time, these small pieces of debris are squeezed and are buried under more and more layers of sediment that piles up on top of it.
We have learned about dinosaurs from the discovery of both body fossils and trace fossils. Body fossils include parts of the dinosaur s actual body, such as teeth, bones, or scales.Body fossils are rare because they only exist in the place where the dinosaur died and was buried.Trace fossils are traces or marks of the dinosaur s life, such as bite marks, nests, eggs, droppings, and footprints. Most fossils are trace fossils, since dinosaurs left marks on the earth almost every day they lived.ody fossils are rare because they only exist in the place where the dinosaur died and was buried. Trace fossils are traces or marks of the dinosaur s life, such as bite marks, nests, eggs, droppings, and footprints. Most fossils are trace fossils, since dinosaurs left marks on the earth almost every day they lived.