50pts.

What causes earthquakes?

Abrupt energy and movement in Earths underground faults.

Explanation:

the energy is stored as seismic waves and eventually gets released, causing vibrations. so basiclly, a fault slips, earthquake happens

the tectonic plates create seismic waves which shake the earth's crust and therefore the ground shakes

Explanation:

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.