What does it mean for a cell membrane to be selectively permeable?
(a) it allows some substances to pass through but blocks the passage of others.
(b) it allows molecules to pass through if they are under a certain size.
(c) it allows only water molecules to pass through.
(d) it blocks the passage of most substances.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.