Carbon 14 isotope is used to determine the age of dead plants like fossils and animals and stones etc. The age determination of very old objects based on carbon 14 isotope is called carbon dating.
Here is a guideline just incase
Answer:
Based on similar appearance - traditional
Based on evolutionary relationships- modern
Known as cladistics- modern
Known as Linnaean classification- traditional
Explanation:
Linnaeus was a Swedish Botanist who was the first to classify organisms based on the structural similarities which organisms had. This method of classification came to be known as the Linnaean classification. Organisms which had more closer resemblances in structures and features had more groups or taxa in common.
The modern system of classification depends on the evolutionary history of organisms. It determines which organisms are more closely and have common ancestors in the past.
This is astronomy not biology,
But anywho, From what I can remember, Copernicus's heliocentric theory stated that the planets orbited in perfectly circular orbits. In reality, they are shaped like ellipses (ovals).
