Final answer:
The preservation of dinosaur skin or eggs was a relatively rare event due to various factors such as the delicate nature of the materials and specific environmental conditions required for preservation.
Step-by-step explanation:
The preservation of dinosaur skin or eggs was a relatively rare event. This statement is true.
Paleontologists have found a number of dinosaur nests containing fossilized eggs with intact embryos, which suggests that egg preservation did occur but was not a common occurrence. The rarity of preserved dinosaur skin and eggs can be attributed to several factors, such as the delicate nature of the materials and the environmental conditions required for their preservation.
For example, dinosaur eggs had to be buried quickly in sediment or have a protective covering, such as a layer of carbon, to prevent decay and fossilization. Additionally, the preservation of soft tissues, like skin, requires exceptional circumstances such as rapid burial, oxygen-free environments, and the presence of certain minerals that can replace the organic material.