Put the following events describing the flow of cerebrospinal fluid in order by writing the correct numeral (1-8) in the blanks.
CSF enters the subarachnoid space.
CSF travels down the cerebral aqueduct.
CSF passes through the interventricular foramina.
CSF enters the fourth ventricle.
CSF passes through the two lateral and one median apertures.
CSF is released by ependymal cells.
CSF enters the third ventricle.
CSF enters the superior sagittal sinuses

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?