Answer:
A malaria outbreak causing allele frequencies to change is an example of <u><em>natural selection.</em></u>
Explanation:
Natural selection is a type of selection in which those organisms are favoured to live and reproduce which are better adapted to live in an environment. Due to natural selection, the allele frequencies of a population will tend to change with the passage of time.
When the outbreak of malaria occurs, those organisms which do not catch malaria are able to survive and pass on their characteristics to their offsprings. the other organisms die and do not reproduce. This will cause changes in the allele frequencies.
Viruses are classified as non-living. Although they have DNA or RNA as genetic information, a protein coat, and some, a lipidic envelope, they do not have the machinery to multiply on their own and therefore are non-living. <span>A </span>virus<span> is simply an </span>infectious agent<span> that, through different ways, many times only by releasing its genetic information inside the cell, </span>replicates<span> using other living-cells machinery</span><span>. Viruses are able to infect any type of cell.</span>
<span>The movement of the rib cage changes air pressure in the chest cavity because when the rib cage raises, a decrease in air pressure in the chest cavity causes air to rush out into the lungs.</span>
