5. In 2016, the International Union for Conservation of Nature (IUCN) raised the IUCN Red List threat
level for the giant panda from "endangered" to
"vulnerable." Which of these statements seems the
most reasonable explanation for the upgrade?

A. With new information from satellites and other sources, panda populations seem to be larger than originally estimated
B. Food sources for pandas decreased due to overpopulation.
C. Panda birthrates decreased.
D. Pandas began to immigrate from other areas.

Select the best answer for the question, ly 12. which of the following behaviors is not an inherited behavior?

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.

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false