Final answer:
The word "oron" is likely a typo for "iron", which is an essential element in biology. Iron is needed for the formation of hemoglobin in blood, which carries oxygen, and is obtained through diet. Iron deficiency can cause anemia, resulting in fatigue and weakness.
Step-by-step explanation:
The question seems to have a typo: "oron" is likely meant to be "iron", which would make sense in the context of a biology question. Iron is indeed a biologically essential element, particularly as a component of hemoglobin in blood, which is responsible for transporting oxygen from the lungs to the rest of the body.
Humans need to obtain iron through their diet, as the body cannot produce it. Foods rich in iron include red meat, beans, nuts, and certain leafy green vegetables like spinach. Iron deficiency can lead to anemia, which is characterized by fatigue and weakness, because of the reduced oxygen-carrying capacity of the blood.