Which of these statements is not true of the phylogenetic tree?
a. it ranks organisms by importance in evolutionary history.
b. it depicts an organism’s lineage as it changes over time
c. it shows successive events of speciation in which one species gives rise to two

How do you date a sample of rock that you suspect as being one of the earliest on earth

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

What enzyme is most important for dna replication and why?