Human red blood cells placed in a 2% salt solution appear to shrink but burst when placed in a 0.4% salt solution. Which statement best supports these observations? Osmosis may occur in either direction across the cell membrane.

The nucleus regulates the amount of water the cell absorbs.

Salt is actively transported across cell membranes.

Salt causes cell walls to swell by absorbing into the cell.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

idk im sorry.