These two charts show the change in the human population over time. Chart 1 shows historical change as well as some population projections for the future. (Many of the historical and projected numbers are estimates based on models and research.) Chart 2 shows the trend in global population of two different age groups. The y-axis shows what percentage of the population each age group makes up.

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.

check for the pregnancy rating of drug. if its class c or d see if other alternatives