Water, Sunlight energy, and CO2(carbon dioxide)
The term for the type of key that biologists used in separating<span> groups of organisms that are based on couplets is called taxonomic key. This key is very useful in the identification and classification of a </span>specific organism and it usually has an analytical characteristic.<span> </span>
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.
