Which human activity has aggravated the ecological issue of global warming

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.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

What are ways that ordinary people can to keep antibiotic resistance from getting worse?