Which of the following statements is not true about ecosystems?

1. a healthy ecosystem can support an unlimited number of life forms.
2. the parts of an ecosystem depend on each other.
3. predators play a role in balancing the earth's ecosystems.
4. people's activities can improve the health of an ecosystem.

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.

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