What factors influence the input and output of carbon through earth's spheres? the oceans on earth act as carbon sinks. the combustion of fossil fuels contributions to an increase in atmospheric carbon dioxide. animals are solely responsible for the release of carbon dioxide via respiration. atmospheric co2 is continuously exchanged with the oceans and on land. man's activities on earth contribute to the decrease of atmospheric co2. vegetation and soil take in more co2 than they release.

The oceans on earth act as carbon sinks

the combustion of fossil fuels

atmospheric carbon dioxide is continuosly exchanged

vegetation and soil take in more co2 than they release

b is the best answer for this question.

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.