In addition to being food for harpy eagles, how else do sloths help the rainforest? by spreading the seeds of a variety of fruit trees
by serving as an alarm system when they see predators
by eating only a little fruit at a time so that there is enough for everybody
by killing dangerous spiders

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.

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells

What are levels of ecology and how can we remember them