Oxygen is needed to stay alive. Without it you suffocate.
natural gas
oxygen
Oxygen.
Oxygen is the gas that we need to stay alive and is also required for burning. A burning splint will burn brightly in oxygen because it supports combustion.
They need to stay alive to support the organism
Oxygen is the gas humans and animals need to breathe in.
Because new gas is produced as a part of a cycle.
water,gas,food,and waste disposposol
The four thing you need to stay alive are: Oxygen, water, Food, and Air
The gas you need to stay alive is Oxygen, you need oxygen to carry vital functions of body, when you inhale oxygen, its goes directly into the lungs and through alveolis, which are present in lungs oxygen get absorbed into blood which is then taken to heart and heart pumps the blood to each and every part and organ of the body, so like this your body works.
Plants need carbon dioxide for photosynthesis, which is the process through which they make their own food. They also require oxygen for respiration, which is the process that releases energy from their food.
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