When resources get scarce, population growth:
Correct answer: C. Slows Down
- A. Becomes fast
- B. Remains same
- C. Slows Down
- D. None of these
Explanation
When resources become scarce, the population growth of a species tends to slow down or stabilize. As resources become scarce, individuals within the population have to compete more intensely to obtain the necessary resources like food, water, and shelter. Increased competition can lead to reduced reproductive success, as some individuals may not have access to sufficient resources to support their own survival and the survival of their offspring. In response to limited resources, some individuals may delay or reduce their reproduction. This could result in lower birth rates, which in turn would slow down the overall population growth rate. Resource scarcity can lead to higher mortality rates, especially among the most vulnerable individuals like the young, old, or sick. Lack of adequate nutrition and resources can weaken individuals, making them more susceptible to diseases and predation. In some cases, when resources become scarce in a particular area, individuals may move to other regions with better resource availability. This migration can lead to a redistribution of the population, impacting the growth rate in different regions.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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