Which of the following statements accurately describe variation in human skin color? Data support a correlation between UV intensity and skin color variation.

Human skin color variation is mostly determined by the types and amounts of melanin present in the skin.

Variations in human skin color can be quantified, or measured.

On average, the skin color if indigenous peoples around the world correlates with UV intensity in their environments.

All of these are accurate.

Someone help

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.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation:

the answer is c a tornado