oxygen
Aerobic exercise
Humans need oxygen to survive. Oxygen is necessary for cellular respiration, which allows our cells to produce energy. Without a steady supply of oxygen, our organs and tissues would not function properly.
No, kids are still growing and need a steady supply of nutrients and calories for healthy growth.
An echidna needs a steady supply of termites and/or ants (it prefer termites), and soil soft enough to burrow in.
Oxygen.
The human body doesn't contain and don't need rutherfordium.
we need study the human organ because this our human body
because this is our human body
because this is our human body
The human body can survive without the spleen, gallbladder, and one kidney.
Unless you have a steady supply of food all year round, you have to store food when you can get it to have something to eat when the food isn't growing.
I doubt it. Unless you have a large, steady supply of seaweed from the galapagos islands, feeding might be an issue