The wars of Alexander the Great were fought by King Alexander III of Macedon (The Great), first against the Achaemenid Persian Empire under Darius III, and then against local chieftains and warlords as far east as Punjab, India.
What are the four most abundant elements found in living systems? There are 4 very abundant elements found in living systems. These 4 abundant elements are oxygen, carbon, hydrogen, and nitrogen.
A) Carbon, hydrogen, oxygen, and nitrogen are the most abundant elements of living matter. B) Some trace elements are very abundant on Earth. C) Virtually all organisms require the same elements in the same quantities. D) Iron is an example of an element needed by all organisms.