The answer is 0.5 to 1 micrometer thick.
The directional selection is the type of natural selection, in which an extreme phenotype is promoted due to the changes in the environment. This causes the changes in the allele frequency and the shifting of the phenotype in a particular direction. In this condition, one of the extreme phenotypes are promoted, which result in the shifting of genotypic frequency either of the homozygous characteristics.
Adaptation is a response to the environment but long term.
For example:
A wolf has a fur coat as an adaptation to the cold weather, but birds migrating south is a response to cold weather.
Answer:
The balanced equarion is
4Fe + 3O2-------> 2(Fe2O3).
Explanation:
It would not affect the economy as much as a expensive object would be.
