Even though sodium ions are tiny, they cannot cross a cell membrane using passive transport. Why not?

Environmental differences within ecosystems are generally caused by

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease