"slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere, causing

hot spots.
rift valleys.
ocean trenches.
mid-ocean ridges.

Basically it would be mid-ocean ridges.

Ocean trenches

Explanation:

"Slab pull" is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere, causing ocean trenches.

Ocean trenches are steep depressions of the ocean floor which are formed by subduction of the lithosphere that occurs due to the motion of tectonic plates by a force known as slab pull. In the process of subduction, two or more tectonic plates are converged, and the older plate which has the larger weight is pushed under another plate, causing the sea floor to bend to form a steep, v-shaped depression known as ocean trenches. This process result in earthquakes, formation of volcanoes on land and on the ocean floor, and raising of mountains.

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.