Which type of volcanic mountain has wide, gentle slopes?
rift
shield
composite
cinder cone

Which plant has a visible leaf modification that will it conserve water in extremely dry environments?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

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.