What is a channel with continually flowing water that flows into a larger river called?
a gully
b flood plain
c rill
d tributary

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

Some substances but not other can cross the (blank) membrane of a cell

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos