{20 points} {pls help brainliest} Where in the inner ear are receptors for hearing and maintaining balance located?

A. Receptors for hearing are in the cochlea; receptors for balance are in the vestibule.
B. Receptors for hearing are in the vestibule; receptors for balance are in the cochlea.
C. Receptors for hearing and balance are in the vestibule.
D. Receptors for hearing and balance are in the cochlea.

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast