5. Newborn infants nursing from their mother receive milk containing antibodies against diseases to which the mother is immune. The infants,
however, remain immune to those diseases for only a short time. This
situation is an example of *
O an oral vaccine
active immunity
a phagocytic activity
O passive immunity

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'm thinking 600 feet deep in one of the finger lakes.