What are strengths and weaknesses of oxygen? will be giving brainliest if you are right :)

Explanation:

Oxygen is a strong oxidizing agent and has the second-highest electronegativity of all reactive elements, second only to fluorine.

Oxygen can damage us though. It can react with many different types of molecules. It can damage things like amino acids, proteins, and the nucleic acids

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.