Collective nouns denote a group of people, objects, ideas, or animals as a single concept. Though the collective noun refers to more than one in a group, the noun itself is considered a single thing.However, they can be used as either singular of plural.It all depends on the sentence.Tying to decide which form to use can get confusing because you have to use the correct verb and pronoun forms, too.xamples of Collective Nouns. The singular verb and pronoun form is used is if they are acting in unison. For example: The class listens [singular verb form] carefully to its [singular pronoun] teacherâs instructions. (Here the class is a unit acting together as one.
Radiocarbon dating can only be used to determine the age of objects that were once alive, such as fossilized bones or plants. It is of no use in dating geological formations that do not contain some remains of formerly living substances.
Consequently, palaeontologists rely on stratigraphy to date fossils. Stratigraphy is the science of deciphering the layer-cake that is the sedimentary record. Rocks normally form relatively horizontal layers, with each layer younger than the one underneath it.If a fossil is found between two layers whose ages are known, the fossil's age is claimed to lie between the two known ages.onsequently, palaeontologists rely on stratigraphy to date fossils. Stratigraphy is the science of deciphering the layer-cake that is the sedimentary record. Rocks normally form relatively horizontal layers, with each layer younger than the one underneath it.