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.
Sneezing is the method some viruses spread (normally flu ones). When you are infected, and you sneeze, the viruses a dispersed in the air and the person that breathes he infected air might get infected.
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A way you can evaluate whether or not scientific information is reliable is by their source, reliable sources include textbooks, authorized sites, etc. Reliable info will include backing data, use objective reasoning, will not have any bias.
The answer is D. Food Threshold is the amount of food capable on feeding the organisms.
Answer:
D
Explanation:
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