Identify the principle(s) of the cyclical theory of change. i. every civilization follows the cycle of a biological organism and experiences stages similar to birth, growth, maturity, old age, and death. ii. the fate of a society is determined by how it responds to and overcomes challenges. iii. civilizations alternate between two cultural extremes: the sensate and the ideational. a. i b. i and ii c. i and iii d. i, ii, and iii

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.

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.

Which level of taxonomy has the fewest organisms?