Eukaryotes are normally much larger in size than any prokaryotes considering a eukaryotic organism contains a nucleus and other organelles that are enclosed by the cell membrane, which prokaryotic organisms do not contain a nucleus nor organelles from the cell membrane
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features)
DDT (DiChlorodiphenyltrichloroethane) has popular been used
as a pesticide since the 19th century used especially during World War I to control typhus and malaria
vectors. The chemical had application as
a pesticide both in homesteads and in agriculture. However, it has been banned in the USA due to claims of its carcigonecity and its negative environmental impact. DDT has been shown to harm most arthropods indiscriminately.
