population control may be affected by many factors. Humans can significantly affect the size of animal populations they directly interact with. This example is relatively common (and sometimes even a legal requirement) for spraying or neutering dogs. Spray - remove the ovaries and uterus of a female animal - y = ovariohysterectomy terminology. Castration - removing the testicles of a male character - the term y = orchiectomy. people of different activities (eg, hunting, farming, fishing, industrialization and urbanization) all impact different animal populations.
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