Question: Mary And Her Toddler Son Are Flying To California. During The Flight The Cabin Loses Pressure. O2 Masks Drop From The Overhead Compartment. Mary Puts On Her O2 Mask And Then Helps Her Toddler. Why Do Mary And Her Son Need O2. Why Is It Important For Mary To Put Her Mask On First?

Question: Mary And Her Toddler Son Are Flying To California. During The Flight The Cabin Loses Pressure. O2 Masks Drop From The Overhead Compartment. Mary Puts On Her O2 Mask And Then Helps Her Toddler. Why Do Mary And Her Son Need O2. Why Is It Important For Mary To Put Her Mask On First?

Mary and her toddler son are flying to California. During theflight the cabin loses pressure. O2 masks drop from the overheadcompartment. Mary puts on her O2 mask and then helps her toddler.Why do Mary and her son need O2. Why is it important for Mary toput her mask on first?