What are the two forces that must balance out to maintain a state of isostasy?

Isostasy is the rising or settling of a portion of the Earth's lithosphere that occurs when weight is removed or added in order to maintain equilibrium between buoyancy forces that push the lithosphere upward, and gravity forces that pull the lithosphere downward.

Explanation:

Theory of Isostasy, is a fundamental concept in geology, is based on the opposing influence of two main forces – Buoyancy and Gravity. It is the state of gravitational equilibrium between earth’s crust and mantle, Such that – The crust floats at an elevation that depends on its thickness and density. It is the idea that the lighter crust must be floating on the denser underlying mantle.

Explanation:

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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.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.