Reserved for Maori Politicians.
Answer:
the fossil organisms lived for only a short span of geologic time
Explanation:
The index fossils are very useful when it comes to determining the relative age of the rock layers, as well as the other fossils found in the same layer with them. These fossils have four basic characteristics, they appear only in limited geologic time, they are widespread, abundant, and distinctive. The fact that they are limited in their geologic existence is very good for the geologists as when they find a fossil like this they are immediately aware of the geologic period they are working with without having to make examinations. Also, these fossils can be found in abundance and in numerous places around the world, thus the same fossil can be used as a time scale almost everywhere. Being distinctive also helps a lot because the geologist can immediately be aware of the type of organism without having to further examine it.
First option is the correct answer.
Catherine II or Catherine the Great (1729-1796) was very fond of education and culture. She maintained correspondence with the thinkers of the era such as Voltaire and Diderot. She was the owner of an art collection that now is exhibited in the Hermitage Museum. However, during her reign she improved the Russian empire. She continued the process of Westernisation initiated by Peter the Great (1672-1725). Catherine added territories such as Crimea, Belarus and Lithuania extending the Russia’s borders into central Europe.
