Examlex
Learning about patterning helps preschool children to:
Carbon-14
A radioactive isotope of carbon used in radiocarbon dating to determine the age of organic materials.
Paleozoic Sedimentary Units
Layers or formations of sedimentary rock created during the Paleozoic era, documenting ancient environmental conditions.
Precambrian Rocks
Geological formations dating from the period before the Cambrian, over 541 million years ago, representing Earth's earliest history.
Depositional Contact
The surface or boundary between two layers of rock where new sediment layers accumulate on top of existing ones.
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