Why do we only have fossils of a fraction of the things that have existed on
earth?

Select the word from the list that best fits the definition a system made of 25 satellites

Can someone i have no idea of how to do this.

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