Micro-evolution represents the change in the frequency of the genes in populations in a small period of time and thus can be observed easily.
The case of the House sparrows which were introduced in the colder climates of North America in 1852 grew larger in size as compared to the sparrows of South America.
This change in the size happened as a result of the natural selection in which the colder climate selected the sparrows with large body size and thus large size of the body was passed on the generations and became permanent.
House sparrows in the northern part of North America are larger than those found in the southern regions. The possible mechanism of microevolution is more likely to be responsible for this is natural selection. The answer would be letter B.
The immediate intervention for
this client is to let her limit the number she washes her hands a number of
times. The advice is not to illuminate but reduce so that the client still cope
with the feeling of anxiety while aiming why handwashing is not necessary. Also
there is a need of washing the hands for instance after toileting.
