Which of the following would most likely kill the affected plant?
a. an insect lays eggs on the underside of a fern plant
b. a beaver eats the bark and underlying tissue all the way around an oak tree.
c. lightning separates a branch from a pine tree.
d. moss is submerged in rain water

Rue or false siblings look simila rbecause they each have some traits of their parents.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

9. the history of life on earth is recorded in