A group of people rented a fishing boat for the day and traveled far from land. Later they
discovered they needed a compass to find their way back. Which of the following describes
the force acting on the compass to guide them safely back to land?

A. gravity
B. electrical force
C. Magnetic force
D. friction

Which muscle is responsible for inhalation ?

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.

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants