Which of the following is a challenge for implanting sustainable farming a . higher initial costs
b. increased erosion
c. lack of pollinating insects
d. increased need for fertilizer

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.

Regarding most of the narrator’s story, which word best describes the tone?

The negative impacts of nonnative species generally outweigh the positive impacts