Explain why there might be similar fossil on the east coast of south america and the west coast of africa?

answer:

The continents were once all one big continent called pangaea

Explanation:

About 245 million years ago, the continents were joined in a landmass known as Pangaea. So there are chances that there might be similar fossils on the east coast of South America and the west coast of Africa.

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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.