Which abiotic factor shapes many of the biomes found along the tropic of cancer and the tropic of capricorn
a. lack of sunlight
b. high humidity
c. low rainfall
d. low temperatures

Explanation:

Thunderstorms and rains are usually located in the equator. So, the lacking of it represents a change in biomes, because plants and animals adapt constantly in order to survive, according to Darwin's theory.

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.