Answer:
C. Countries with low literacy rates often have weak economies and weak government
Explanation:
It remains a fact that technology is the bane of health care and it is literate people that control those technologies. When the literacy level is low, there is low advancement, low economies and weak government
When a population exhibits adaptation, it indicates that the population has responded to a pressure from the environment in a way that causes the prevalence of beneficial features to rise over time.
Natural selection only affects heritable traits in populations, favoring advantageous alleles and reducing the frequency of harmful alleles, a process known as adaptive evolution. Natural selection only affects heritable traits in populations. However, natural selection affects whole organisms rather than specific alleles. A person may have a genotype that is extremely advantageous and a phenotype that, for example, boosts fecundity, but if that person also contains an allele that causes a fatal childhood ailment, the fecundity phenotype won't be passed on to the next generation.
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When the moon is in the middle of earth and the sun.
