What happens to ecosystems when a keystone species is lost

Answer : Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether. 

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the health of the ecosystem declines

Explanation:

once this keystone species is lost, it's predators will die off because of lack or food, or feed on other species until those die off and then the predators die off. the keystone species' prey will rise in poulation and compete to th point where those die off too.

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !

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.