What happens during inhalation? a. the diaphragm and the rib cage return to their normal resting positions. b. the diaphragm contracts and moves down while the rib cage moves up and out. c. the diaphragm expands and moves up while the rib cage moves up and out. d. the diaphragm contracts and moves down while the rib cage moves down and in.

I don´t know is all is on k-12 but the correct awnser on k-12 is The diaphragm pushes up and the ribs move in and down.

Explanation:

I took the test

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.