PLEASE HELP!! WILL BE MARKED BRAILIEST 10 points for each

9. stem-like structure of a mushroom which supports the cap and gills
symbiosis
sporangium
stalk
rhizoids

10. phylum of aquatic fungi commonly called chytrids, characterized by flagellated
reproductive cells *
Chytridiomycota
gills
fruiting bodies
Ascomycota

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.

Explain how scientists use geologic time to determine the age of landforms.

Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)