Sentences with phrase «previously sustainable levels»
«If environmental factors are driving the population down, previously sustainable levels of fishing might suddenly drive a collapse,» he said.
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Researchers have previously attributed the overestimates to the time lag needed for species to go extinct after their habitat is reduced past sustainable levels — the «extinction debt».
As stated previously, these regulations will help ensure program graduates have sustainable debt levels both in the early part of their careers and in later years so loan payments are kept manageable and do Start Printed Page 64923not interfere with individuals» ability to repay other debts or result in general over-indebtedness.