State and explain three main criteria used by scientist to classify organisminto different taxa ?

The term equestrian relates to which animal? bulls cows horses pigs

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?