Indeed, research conducted since the mid-1980s has shown that the bacterium Helicobacter pylori(H. pylori) is present in more than 90% of duodenal ulcers and about 80% of stomach ulcers. However, more recent figures indicate those percentages are declining.
Yield curves can be classified as upward sloping flat. This preview shows pages 7â16. Sign up to view the full content. This preview has intentionally blurred sections. Sign up to view the full version. This preview has intentionally blurred sections.
The bowed out shape of the production possibility curve is because certain factors of production are better suited to producing one good than they are to producing another goo â¦ d. For example, if the two goods are food and clothes, then in order to produce more and more clothes, eventually the most productive farmland must be allocated to clothes production.