Answer:
An index fossil is also known as guide fossils or indicator fossil. They are fossils used to determine and identify geologic periods.
The main characteristics of an index fossil include :
1.It must be distinctive.
2.It must be widespread.
3. It must be abundant
4. It must be limited in geologic time.
Due to trends and studies of most fossil-bearing rocks being formed in the ocean, the major index fossils are mostly marine animal or plant organisms.
DNA contains instructions for making the different molecules that a cell needs to grow and function. For example, proteins are made by translating mRNA.
<h3>What is DNA and what is its function?</h3>
DNA is the structure responsible for transmitting all genetic characteristics — such as eye, skin and hair color, physiognomy, among others — in the process of reproduction of living beings. In this way, the main function of DNA is to carry information contained in its sequences, called genes.
DNA is made up of two chains of polynucleotides (strand), which are made up of several nucleotides. Nucleotides are joined together by bonds called phosphodiester (phosphate group linking two sugars of two nucleotides).
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False unlike the outer core the inner core is made out of mostly solid because it contains iron
The main differences between hypothesis and theory are based on the amount of scientific evidence and the ability to make predictions about a given outcome.
<h3>What is a scientific theory?</h3>
A scientific theory is a well-sustained body of empirical evidence that allows us to make predictions associated with new observations of the real world.
Conversely, a hypothesis is a given explanation that must be tested in order to be confirmed (or rejected) by using the steps of the scientific method.
In conclusion, The main differences between hypothesis and theory are based on the amount of scientific evidence and the ability to make predictions about a given outcome.
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