Not to sure if I need to translate it but it says what is electricity
Traits which are shared by more than one member of a group due to common ancestry are known are synapomorphies.
The term synapomorphies refers to the possession of a trait by more than one member of a particular group due to the existence of a common ancestor.
Analogies include structures or organs which have developed from separate ancestors but are linked with the same function in different organisms e.g. wings of a bat and wings of an insect.
Homologies include structures or organs which have the same origin (developed from a common ancestor) but perform dissimilar functions e.g. wings of a bat and the forelimb or hand of a human.
To learn more about synapomorphies here
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The people represented by the ends of the bell-curve are the most rare.
This could mean that if it's an iq curve the people at the ends have either a really high or really low iq etc.
<span>It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food.</span>
Because an organism with a genetic variation may have better chances of breeding and passing on that trait if the trait is beneficial to the survival of that organism. This leads to that trait being passed on and becoming wide-spread over generations of reproduction; natural selection.