Why do more cancer deaths (as a percentage of population) occur in the U. S. than in poor regions of Africa or Asia?
Select one:
a. pollution is worse is the U. S.
b. the population is more mixed than in most nations
c. the population tends to be older in the U. S.
d. there is more radiation in the U. S. from bomb testing

D

Explanation:

There is more radiation in the US from bomb testing

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.