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PHYLOGENY

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What can scientists learn by studying fossils I. how the Earth's surface has changed over time II. the appearance of an organism and its structures III. how species have changed over time IV. how the?

By studying fossils, scientists can learn how species have changed over time (III), providing insights into evolution and extinction events. Fossils also reveal the appearance and structures of ancient organisms (II), which helps reconstruct past ecosystems. Additionally, they can indicate how the Earth's surface has changed over time (I), such as shifts in climate and geography, by showing where different organisms lived in relation to environmental conditions.


Once an organism has a scientific name it can not be changed?

Once an organism is named there is always the possibility that the name can be changed. Since organisms can evolve and change over time the properties that made the organism what it was originally may be no more and require a new name.


Why have classification systems have changed over time?

Classification systems have changed over time because biologists have found better ways to organize the increasing organisms .


Where is evidence that organism have changed over time buried?

Evidence that organisms have changed over time is primarily buried in sedimentary rock layers, where fossils are found. These layers form as sediments accumulate over time, preserving the remains of ancient organisms. Additionally, fossils can be discovered in amber, ice, and other natural materials that can encapsulate and protect biological specimens for millions of years. This geological record provides crucial insight into the evolutionary history of life on Earth.


What is a fossil gene?

A fossil gene is a gene that has lost its function or has become non-functional over evolutionary time. These genes are remnants of ancestral genes that have accumulated mutations and are no longer actively involved in the biological processes of an organism. Fossil genes can provide insights into the evolutionary history of an organism and how its genome has changed over time.